Too much time on his hands - the geek version.

Someone's website has collected computer programs which print out the lyrics to 99 Bottles of Beer. He's gotten programs in 598 different computer languages, from A+ to ZZT. The languages that I recognize - Fortran, Cobol, Basic, and a few others - look correct.

Still, I think that the best versions of the song are on the "History" page, with the Mathematician's version ("Aleph-Null bottles of beer on the wall") and the Zen version ("No bottles of beer on the wall").