The four Ys games and the four Legend of Heroes games - because Falcom.
Dungeon Explorer: Warrior of Ancient Arts - not really. I wanted to like it, but it's a turd.
Bomberman and Bomberman Land (if you like mini-game stuff) - because Bomberman.
The three GTA games - I like running over mouthy pedestrians and gratuitous cursing.
Dracula X Chronicles - I don't hate the remake version, but the unlockable original is where it's at.
Any of the Lego games - they're cute, amusing, and I'm easily entertained.
Little Big Planet - everyone should have a copy.
Frantix
This one started out fun, but about half way through got balls tough and pissed me off.