I'm a long-time lurker (I read your posts from the Free Republic and was also a lurker), but I thought I'd sign up and vote for 30, it seemed like fun! Here's my picks:
1, 3, 7, 11, 18, 21, 33, 37, 43, 44, 45, 46, 57, 60, 67, 68, 79, 90, 91, 94, 95, 103, 106, 113, 131, 138, 140, 149, 165, 176