Stashed in: Reaction GIFs!, Seinfeld, Back to the Future, Upvote! Downvote!
Heh, I wish all downvotes work this way!
Will look for more downvote gifs to add here...
Back to the future.
Kramer downvote gifs
The Other Guys - Highsmith's Rant gif
Olivia Wilde and Stephen Colbert Aroused gif
Ain't nobody got time for that gif HD
Ryan from The Office agrees gif