Really interesting article on five vestigial organs in humans. Doesn't include the appendix, as the jury is still out on its vestigiality. The five are:

Vomeronasal organ
Goose bumps
Darwin's point
Tail bone
Wisdom teeth

Speaking as someone who has broken his coccyx, the tail bone, I'd like to say: ow. Also: wisdom teeth? Kind of uncomfortable, but still haven't been a huge problem. I'm still waiting for the catastrophic eruption of number 4, though.