A fellow blogger had these guys up on his blog. U gotta see them too.
The bespectacled guy is jermaine and the non-bespectacled guy is bret. They’re from New Zealand and refer to themselves as “Formerly New Zealand’s fourth most popular guitar-based digi-bongo accapella-rap-funk-comedy folk duo” (source: Wikipedia)
These guy even won a Grammy in 2007 for Best Comedy Album.
Other must-hear/watch songs/acts are Jenny Hiphopopotamus Vs Rhymenoceros