The footwear thrower would have been me, but couldn't risk doing that kinda damage to the big screen.
I think it's lame. It doesn't make them play better, it's demoralizing. Personally, I never boo my team, college or pro. I just don't think it helps. I may be pissed off, groan, not cheer, etc, but I'm not going to shower my guys with booing when I know they want to win as badly as I want them to.