As a hard core atheist, it is good for me to see really religious guys like Larry Wall which are so laid back that they can make fun of their own opinions.
For the record, I have met a few.
A little bit like when, as an Emacs user, I see a post on a really informative blog about their Vi configuration. Or at a conference when the speaker connects the computer -- "wtf, he use Windows!?" :-)
(And as a metal fan I mostly avoid the lyrics, it might destroy the music if they are too stupid. But I'm a wimp which listen mostly to technical death.)
Completely offtopic, but there are some black(ish) metal bands with great lyrics.
Being a nerd, I am for example very partial to Vintersorg's album Cosmic Genesis (check out the song Algol ! [1]). (The singer, Andreas Hedlund, is actually a primary school teacher)
See (and hear) also the Irish band Primordial, who have great songs about Ireland. I've got goosebumps everytime I hear the chorus of "The Coffin Ships" [2] or the ending poem of "Death of the Gods" [3].
I could go on forever, but I'll mention three more bands, Vulture Industries for their very theatrical lyrics [4] and Solefald for the crazy and philosophical stuff [5]. And finally, a personal favorite of mine, Behemoth's "The Youth Manifesto" [6]. (Nergal, the lead singer and guitarist, is a fantastic lyricist and an incredible person)
Meshuggah, Nile, Dillinger Escape Plan, etc. Not the extreme stuff (when Darkthrone's "Blaze in the northern sky" gave me a headache; then I knew I was at my limit :-) ).
Disclaimer: I do like lots of whining singer-songwriters and folk music (including Irish like Altan etc) too. Even Mary Gauthier!