99bottles-of-beer.net has gathered code samples in 1304 programming scripting languages and versions, even the queerest ones like SCL (System Control Language). Every code sample generates the "99 bottles of beer" song text as output, sometimes even with a nice twist.
My favorite code samples are the Autoit version and Ruby (minimal) version. Probably because I just love to script in those languages. If you ever quickly want to know how a programming language looks like, you can easily look it up in their database.