Let's see if you like RPGs...
Suikoden series, Valkyrie Profile, Lunars, Persona series, Legend of Dragoon, Breath of Fire series, and Xenogears
Looking at my collection I don't really see many non-RPGs I've kept, they weren't really worth keeping.
The one game I regret getting rid of is Legend of Mana. Erg, but I got more money than I paid for it so it's all good.