The tilt controls on the PS3 are quite neat - super rub a dub uses them alone to guide a rubber duck around a bathtub and its quite responsive. I think it was a bit of a bolt on solution after ninty revealed the wii tho...
Oh yeah - i forgot to add Monkey Island 1 & 2 to my list. Definate purchase material. A mate of mine - the Atari guy actually - saw the light and bought an A600 with Loom, which was fantastic but i remeber it feeling dated at the time as Monkey Island 2 and Beneath a steel sky were contemporary releases at the time.
While i'm at it ill add Apidia and Sim Ant - great insect based fun!