You'd be thinking of "Half Full/Half Empty." It was in Teller's house seen in the Bravo profile.http://www.youtube.com/watch?v=SoksoGBtpJ0
It was by Georgia Mayer. (spelling?) I'm not sure if she still lurks but she used to go by Texas Art Chick around these parts. Her site is currently "under construction" so I don't know if she's still active. She did all the paintings you see in that part of the video.