I love book covers. I've even chatted with Chip Kidd, who has done some of the most eye-catching book covers ever (like Jurrasic Park). [Full disclosure: it was at a party at a book event in Vegas, and I thought Chip was this other guy who also had a shaved head and little glasses. I asked Chip, "So are things better than they were earlier?" - the other guy had had a headache - and we had a long, if somewhat confusing conversation after that.]
If you like book covers, you must immediately go over here and vote for your favorites.