Here's a list of the games and there's some great ones in the lot: Frequency, Ico, Viewtiful Joe, Ikaruga, TimeSplitters 2, even Rez(!).
Ideally, you can pick up half a dozen of the best games ever made for $30, but my experience with these sales at Circuit City has not been positive. The selection at my nearby stores has been poor and the staff uninformed and overworked. The allegedly on-sale items were not separated from the rest of the merchandise and some items still rung-up at the full price.
Hope you have better luck than I've had. ;)