This week’s episode of South Park had a moment here some of the characters were playing Rock Band, with Cartman doing the vocals for Lady Gaga’s Poker Face. It was so entertaining that I tracked down a full version of the song. You can download the mp3 from this Rapishare link, or try downloading the file directly from here (this second link will probably be slower).
UPDATE: I just discovered a different version on youtube. This one is a video of the song on Rock Band 2 with Cartman singing the lyrics.