A fairly recent subreddit, /r/gifsound, is dedicated to putting an appropriate soundtrack onto popular gifs. Here's a compilation of their best creations from the past year. The YouTube page has a list of the posts they are taken from. You can go back through each to find the original video or gif if you are that curious. -via Daily Picks and Flicks
Nov 28 - Nov 30, 2014: The lowest price we'll have all year - Get yours today!