I stumbled across this GIF tournament put on by SB Nation. It is spectacular.
The link is to the championship matchup and you can work backwards if you want to see the GIFs that didn't make it to the final round (including "Runaway Utility Cart," "Favre gets hit in dong," "Bruce Bowen Flying Kick," etc...)
There are some real gems here...dare I say some true works of art. I really enjoyed checking these out and I'm sure you guys will to. I have a lot of favorites but "Roller Blading Raptors Mascot" is the champ in my book. Scroll down on the championship matchup page and check out the amazing comment with almost 100 recs.