I recieved mine as well. Awesome stuff. Great condition.
I don't know a complete list, but Ninja Assault, Point Blank series, and the Silent Scope series are a few titles.
SD
First off, I don't think the silent scope games actually take advantage of a lightgun on the ps2. Unfortunately, I think the time crisis series blows away most of the other ps2 lightgun games but here are the ones I can list from memory:
Time Crisis II + 3 + Zone
Vampire Night (this is a pretty good game)
Ninja Assualt
End Game
Starsky and Hutch (Driving and lightgun)
Dino Stalker
A few resident evil lightgun games (I can't remember their names)
I think there might be a virtua cop for the ps2 as well.