Today I hate rumble strips on the side of the highway. We've got some construction that forces bike commuters off the bike path and onto the highway for a stretch, and last Thursday I was going through that section, and looking behind me for traffic, when I hit the rumble strip funny, flipped over my handlebars, and landed on my face.
It's not pretty. Could have been worse, though. Wasn't wearing a helmet and managed not to rattle my brain, and I didn't break any bones leave any teeth on the highway. Really freaked out a few people who saw it happen, though. Got the comment from one of them that they'd never seen anyone hit the ground that hard!