One of my favourite comedy group is
Monty Python and I like all of their movies. But I didn't know their
Holzfäller Song (youtube video) until now, where they sing in german (with english subtitles) although they obviously don't speak german. Hilarious, especially if you are a german native speaker. :)
It's pretty rare, but somehow I got the DVD a few years ago...
You can watch the whole thing here: http://www.youtube.com/watch?v=7-86nB94Clk
Don't miss the "Bavarian Restaurant" or the German "Little Red riding Hood"!