This sale has been going on for at least two weeks, and has been posted before... some TRUs seem to display a sign advertising the sale, some don't. The one in Times Square had loads of games, but no sign, but they all rang up $7.99 anyway.
It's only on the ones in the smaller, soft-plastic security case, not all the ones with the Value! sticker. So unfortunately I couldn't pick up games like Twisted Metal, Jak & Daxter, Ratchet & Clank, etc. I tried.
I got:
Hitman 2
Stuntman
Spy Hunter
Sly Cooper
Gran Turismo 3 A-Spec
I also saw SSX, Metropolis Mayhem (something like that) Matt Hoffman's Pro BMX, Mojo, Namco Museum, and other games that didn't really interest me. I would've picked up VF: EVO and Parappa if I'd seen them...