Also, if you find that your PnT doesn't have anything good -- go to another one. It all comes down to the location. If it is near new neighborhoods, they'll have nothing good. If it's near old neighborhoods, you'll be in for the motherload. If you live in Raleigh, NC here is a breakdown of the stores and what you're likely to find:
Cary, NC (Cornerstone) - Store rarely gets anything new. It's located around a lot of new subdivisions. You'll be hard pressed to find any rare gems here.
Cary, NC (Meeting Pl.) - Great store near a lot of older neighborhoods. I've found Lunar 2, FFVII, Brave Fencer Musashi, Mario RPG, PSO Ep. I and II, etc. They've got a lot of good stuff
Garner, NC - Same as the last Cary store. They've always got something worthwhile.
Raleigh, NC (Glenwood) - Best for retro games. I've seen CDi games, 3DO games, Jaguar games, etc. They've got stacks of NES games in box, Atari games, etc. They've currently got a Master System with a phaser gun for $34.99
Raleigh, NC (Wake Forest) - I've only been to the store once. They had some good games, not too much though. It's too far away from me.