I often go to Attaturk's Rising Hegemon. He's one of those lesser known bloggers that you visit on occasion, but not with the frequency of Kos, Atrios, Digby, Josh Marshall etc.
But along Rude Pundit (who is the king) and TBogg (unless he's the king) the guy writes more solid snark than about anybody else on the internet (I can't count Fafblog because I don't want to go blind).
Anyway, he writes a lot of skits and song parodies with Bush Administration people, but this parody, to the Gilligan's Island theme is one of his best.
http://rising-hegemon.blogspot.com/2005/06/yet-another-theme-song.html