Enormous P*nis
Ok, it's only two degrees of separation from slashdot, and has apparently been available for a while, but for those of you like me who hadn't heard it before today, there's a quite enjoyable a cappella novelty song available called Enormous Penis by a Washington, DC, area band called Da Vinci's Notebook. Sadly, the mp3 is of somewhat low quality (48 kbit/s, 22050 Hz), but it is listenable, and quite catchy.