As you aren't familar with Steve Hofstetter, he has a free album http://www.stevehofstetter.com/album.cfm, can't remember if it's one of his better ones though. He's a pretty clever guy.
Also, since he was mentioned, Bo Burnham's good stuff is also very enjoyable. He has some excellently clever stuff, really some fantastic wordplay. Seems like I'd hate him in real life but I will give respect where deserved.
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##Alec
Congrats to Guru champ SuperNiceDog! All hail our Guru overlord.