Comedy music is a REALLY tough thing to do. If it's not funny, you fail. If it's crap music, you fail. You have to win twice to win once. But when people get it right, it can be awesome. Frank Zappa often got it right. Flight Of The Conchords get it right. Rosie Thomas separates out the two and manages to be an incredible singer songwriter AND a genius stand-up.
Enter The Banzai Buddy Band. Think Zappa updated for an internet generation. Actually, it's pretty much half way between Zappa (especially Mike Outram's insane guitar playing) and Flight Of The Conchords (geek references, pastiches, cheesey drum programming).
It works, it's fab, go and buy it. (pay what you like on Bandcamp, via the widget below.)
http://theelectriccampfire.bandcamp.com/album/we-are-the-banzai-buddy-band">In The Lair Of The Dungeon Master by The Electric Campfire