I'm not coming up with 5 favorites and least favorites, but a few that come to mind:
Best: Mouse, Fucktards, Last of the Mohicans, Lost and Found, A Visual Sound, Mosaic, Underachievers
Worst: The Beginning, Extremely Sorry, pretty much any video where the title references skating, any Digital video, and wasn't there an old 88 video called "Destroy Everything Now"?