Cars that insist on passing me on my bicycle with 5 feet of space, but only after sitting right on my tail for several minutes, honking or flashing their lights, in their frustration at being afraid to pass me any closer.
Rap acts who heavily sample showtunes or children's rhymes. Songs from Annie should remain just that. And last weekend, at Venice Beach, I actually heard a local act rapping on top of "The Itsy Bitsy Spider". WTF?