I'm not sure I could name a single worst, especially since I don't watch many music videos these days, but I've never been much of a fan of the ones where it's just the band on stage playing. I especially like ones that are somewhat unique or abstract or something.

The Red Hot Chilli Peppers have some of my favorite videos, and, I think, at least as many that get an 8 or 9 on the blahometer.

yeah, pretty bad. What was the story? Look at all these celebs that miss him? That song deserves better.

The fact that they are mouthing along and clapping their hands kind of makes the song lose it's power. Turns it into a school bus sing-along, if you will...