This is a hilarious animated gif of an elderly man slowly falling over onto a moving escalator before it brings him upwards as he's lying on his back. Don't worry; he seemed fine. I think.
This is an animated gif of Spiderman character J. Jonah Jameson laughing hysterically. Jameson is a character that is portrayed by Detroit, Michigan actor J.K. Simmons. Simmons also played Vernon Schillinger in the TV show Oz. This particular scene is from Spiderman (2002), which starred Tobey Maguire as Spiderman.
This is an animated gif of a Dalek spinning out of control before falling into a hole while the text "I Regret Nothing" appears on the screen. The Daleks are a fictional cyborg race from the popular British TV show Doctor Who, which began airing back in 1963! The phrase "I Regret Nothing" is often used by people whenever they do something that receives a bad / negative reaction from people, but they don't care, simply because it was fun doing it.
This is an animated reaction gif of Jake the Dog from Adventure Time hitting a computer with a newspaper while shouting "Bad computer! No! No!" You can use this as a reaction gif whenever a piece of technology malfunctions or operates in a way that you're not used to. Jake the Dog is voiced by New Jersey actor John DiMaggio.
This is an animated gif of Joey Tribbiani shaking his head and smiling while saying "I'm not even sorry." Joey, who has chocolate or pudding around his mouth, is a character from the TV show Friends, which aired between 1994 and 2004. The character was portrayed by Newton, Massachusetts actor Matt LeBlanc.
I have no idea what's going on, so please bear with me on this one: This is a strange animated gif of two girls staring in shock at one another while a taco goes into one of their mouths, out and then into the other. That was not what I expected to write on a Saturday morning.
This is an animated reaction gif of Disney character Maleficent looking extremely happy with herself. In case you don't remember or have never had a childhood, Maleficent was the bad guy (sorceress) in the cartoon Sleeping Beauty, which was released back in 1959! She was voiced by actress Eleanor Audley, who passed away in 1991 of respiratory failure.
This is an animated gif of Tommy Lee Jones holding his hands up in the rain while he shouts "I don't care!" I'm pretty sure that this particular reaction gif is from the movie U.S. Marshals (1998), in which Tommy Lee Jones portrays Deputy U.S. Marshal Samuel Gerard, a US Marshal who has been given the task to track down innocent-but-accused fugitive Mark Roberts, who is played by Wesley Snipers.
This is an animated reaction gif of Stanley Ipkiss from The Mask (1994) receiving an Oscar award. The movie itself was based on the comics by Dark Horse Comics. Ipkiss was portrayed by actor Jim Carrey. Co-stars included Cameron Diaz, Richard Jeni and Richard Greene.
This is an animated gif of Toy Story character Woody exiting a cardboard box while looking pretty pleased with himself. This is typically used as a reaction gif whenever somebody feels good about themselves. The first Toy Story movie was released back in 1995, which means that it is now nearly 18 years old (seriously, where does the time go). Woody was voiced by Californian actor Tom Hanks, who has also starred in movies such as The Green Mile and Forrest Gump.
This is an animated gif of actor / comedian Kevin Hart staring for an extended (read: long) period of time. This is often used as a reaction gif whenever somebody has said something that is incredibly stupid. Hart is from Philadelphia, Pennsylvania. He has starred in movies such as Scary Movie 3, Paper Soldiers and Along Came Polly. This is from one of his many stand-up routines.
This is an animated reaction gif of Tom Hiddleston saying "Oh, yes." This is from the 2011 movie, Thor, in which Hiddleston played the supervillain character Loki. Hiddleston is from Westminster, London. He also starred in the movies The Avengers (2012) and War Horse (2011).
This is an animated reaction gif of journalist and television personality Anderson Cooper looking shocked and surprised. Cooper is the main anchor on the CNN news show "Anderson Cooper 360°", which launched back in September 2003. He is from New York City.
This is an animated gif of some guy doing a somersault out of a store before spinning around and pointing while the words "Deal With It" flash up. There are so many great things about this gif. The cheesy 80s fashion. The five or six multi-colored sunglasses that form together as one. The sparkles. The purple-colored "Deal With It" text. Not sure where this is from, but it looks like a movie or music video from the eighties.
For when a regular clap just isn't good enough! This is an animated gif of a girl in a panda suit saying "Panda Clap!" before giving a short clap. If you know who this is or what the context is, please post a comment below.
Edit: As a visitor has pointed out, this is Kate Piddleass from Youtube: Her Channel.
This is an animated gif of Bart Simpson walking around and hitting a pan while he yells out "I Am So Great". This is typically used as a reaction gif to describe those who act in a self-congratulatory manner. For example: People liking their own Facebook statuses. Bart is a character in the TV show The Simpsons, which has been on air since December 1989 (that is 24 years!) He is voiced by actress Nancy Cartwright, who is from Dayton, Ohio.
This is an animated gif of martial arts actor Chuck Norris hitting a blonde woman passenger and knocking her out while he is driving a car. Not entirely sure where this is from. Maybe "Walker, Texas Ranger"? Either way, she shouldn't have tried to grab the wheel! Norris is from Ryan in Oklahoma.
This is an animated reaction gif of comedian Ellen DeGeneres spitting out her drink and looking shocked. The Louisiana-born talk show host currently has her own show, which is called The Ellen DeGeneres Show. She also had a small stint on the show American Idol.
This is an animated gif of baseball player Ryan Theriot smiling and looking extremely pleased with himself. The cheeky nod at the end is practically saying "Did you see that? I know!" Theriot is from Baton Rouge, Louisiana. This gif was made while he was still playing for the San Francisco Giants. Currently, he is a free agent.
This is an animated gif of Richardson throwing a bunch of papers at somebody before the word "FACTS" appears on the screen. This can be used as a reaction gif when you decimate somebody in an online argument. Richardson is a character in the movie Hot Rod (2007). He is played by actor Chester Tam. The main character was Rod Kimble, who was played by Andy Samberg (guy from Lonely Island).
This is an animated gif of Rocky and Apollo Creed running along the beach together while they were training for an upcoming fight that one of them was having. This is typically used as a reaction gif to express "bromance" or general delight. For example, I saw this listed under the title: "When my best friend and I are single for Valentine's Day". This is from the Rocky movie series, which starred Sylvester Stallone and Carl Weathers (who also played Dillon in the cult movie Predator).
This is a rather suggestive animated gif of Tom Hanks from the movie Cast Away (2000), in which he played the character Chuck Noland; a system analyst for Fedex who ends up being stranded on a remote island for four years after the plane he was travelling on went down in the ocean. This particular gif has been cropped to make it look as if he was doing something, um, private... when really, he was just trying to light a fire by rubbing sticks off one another.
This is an animated gif of some dude with a creepy / perverted smile. The text over it says "I Can Fap To This". Unfortunately, I don't know the source for this. If you have any idea where this is from, please post a comment below.
Post Edit: As a visitor pointed out, this is Liverpool-born English actor Tom Baker portraying the character Dr Who (1974 to 1981).
This is an animated gif of Simpsons character Moe Szyslak nervously walking across the stage as an audience of women stare on in anger and disrespect. Moe quickly hurries himself across the stage and into the rejects corner. I remember seeing this with the captain "How I feel whenever I try to chat to a group of girls." Moe is voiced by Hank Azaria.
This is an animated gif of Edward "Eddie" Morra working on his computer in the movie Limitless (2011). The movie is about a guy (Edward) who discovers a new drug that gives him a higher level of intelligence. He then uses this new-found intelligence to look for patterns in the stock market etc. The character is portrayed by actor Bradley Cooper, who is from Philadelphia, Pennsylvania. This is typically used as a reaction gif whenever somebody discovers a new online service / tool.
This is an animated gif of a man pointing and saying "Get out!". This can be used as a reaction gif whenever somebody dislikes a band or a movie that you like. Not sure where this is from. If you know, please post a comment below. Edit: As a visitor pointed out, this is from the movie His Girl Friday (1940).
This is an animated gif of a guy unsuccessfully trying to squash an apple. After a while, he just gives up and puts his hands up, all before the text "Thanks Obama" appears. The "Thanks Obama" meme is supposed to satirize those who blame Obama for everything by attributing common everyday nuisances to him. I know the guy in question is a British comedian. Unfortunately, I can't think of his name right now (It is Alan Partridge).
This is an animated reaction gif of Dr. Spencer Reid nodding head and saying OK in a defeated manner. Its as if somebody just said something stupid and he can't be bothered trying to refute it. Reid is a character in the TV show Criminal Minds. The character is portrayed by actor Matthew Gray Gubler.
This is an interesting gif of Aluminium's reaction to the chemical / element Mercury. This process is widely known as amalgamation. According to Wikipedia, "This amalgam is used as a chemical reagent to reduce compounds, such as the reduction of imines to amines."
This is an animated gif of actress Jessica Alba tasting chocolate off of another guy's finger. Not sure what movie this is from. Alba is from Beverly Hills, California and she has starred in a number of movies, such as Sin City, Into the Blue and Escape from Planet Earth.
This is an animated gif of American actress Hayden Panettiere smiling. Not sure what movie / TV show this is from. Panettiere played the role of cheerleader Claire Bennet in the hit TV show Heroes. She also starred in the movie Scream 4. She is from Palisades, New York.
This is an animated gif of actress Mila Kunis biting her thumb and looking rather bashful. Not sure where this is from, but I'm guessing that it is from some sort of TV talk show. Milena Markovna Kunis made it big when she got the role of Jackie Burkhart in the That '70s Show. She was also casted as the voice for Meg Griffin in Family Guy. Kunis was born in Ukrainian SSR, Soviet Union.
This is an animated gif of Cameron Tucker crying. Cameron is a character from the TV show Modern Family, which has been running on ABC since September 2009. The character is portrayed by actor Eric Stonestreet, who is Kansas City, Kansas. He also portrayed Ronnie Litre in CSI.