I'm very fond of Filk Music. One of my favorite filkers is probably Tom Smith. I've never actually been to Con and heard any actual live filking, but I do own a few CDs. One of which is Tom Smith and his Digital Acoustic Compilation and I definitely plan on buying some more of his CDs when I have some extra cash and don't blow it on books or stuff like the new "Weird Al" Cd that's coming next month.
Anyway, I occasionally like to check out Tom Smith's website (because he has some cool free content), and I discovered that he's started a thing he calls iTom, where he'll be posting a new song every week. The song of the week is going to be available for free download, and all the songs can be listened to for free or purchased for 99¢ in a higher quality format.
So far, he's posted four songs, and I really like three of them: Blue Screen of Death, I Want My Flying Car, and Can't Get The File To Play. I definitely recommend going there now. I give it 5 yo-yos.