Seems like some of you guys really liked the top 10. Here are a few great frag vids from youtube that you all might like as well.

TF2 Frag Movie :: Team Druidz - Dr Justice ::
appe's TF2 Soldier Movie
Xensity: The Movie [HD]
TF2 Soldier Fragvid : AKA Magic MoleMachine
Auto-Aim (ft B||oodSire and Jh)
December #dogz - a TF2 Movie

Xensity and Auto-Aim are two of my favs. Enjoy!