I recently completed a Playstation RPG collection and have now decided to branch out. The only genres I'm really not interested in are racing and sports. Games I currently own that are part of the collection include:
Bushido Blade 1
Bushido Blade 2
Heart of Darkness
Hot Shots Golf
Hot Shots Golf 2
Oddworld: Abe's Exoddus
Pandemonium 2
Silhouette Mirage
Tomba!
Tomba! 2
Tony Hawks Pro Skater 2
I should also clarify that I'm not looking for "rare/valuable" games, just stuff that's really fun to play.