I like 11 because it is prime and slightly larger than the standard 10. I think it mirrors my inner mentality that things don't normally go as expected.
Hmm, well for the underlying joke you only need knowledge of the one song (Don't fear the Reaper). It is an SNL skit. I know extraordinarily little about popular music, but this video was very well known several years ago.
[MENTION=41434]Nazaka[/MENTION]; take, for instance, 18. What a nice number 18 is. It has factors of 2, 3, 6, and 9! How pleasant!