This is from a Twista Interview:
Question: I know she's not a 'video chick' so how did you get Aisha Tyler (5th Wheel, Friends) in your video?
Man just trying to pull a couple of strings. Kanye had worked with her previously. That's actually her voice on the song. Just by him doing a lot of production out in L.A. he had the opportunity and he kept on running into her. So when he keeps on running into somebody he'll take advantage of it. That's one of the one of the people he kept in touch with.
http://www.sohh.com/article_print.php?content_ID=5491
WHEW!! Now, I can sleep!lol