Hmmm... I would tell you go for Fable 2, pick up Fable for XBox if you have not played it yet (I like Fable 1 more than 2, plus it is only $10) and Mass Effect.
That's about it for my recommendations.
iPhone = Great gaming device. Don't agree? Who cares, because you're wrong.
Currently playing:
Final Fantasy VI (iOS), Final Fantasy: Record Keeper (iOS) & Dragon Quest V (iOS)