Galcon
Galcon is essentially real-time Risk in space, with a super-simple touch interface. I'm totally addicted.
As designers will get away from the two-thumb button-mashing model and into the multi-touch interface, we'll see some really cool new games.
Readers' Comments
So, yes, I greatly enjoyed it, but I'm not hooked long term.
I think the iPhone is a genuine possibility as a game platform. But I wonder if the economics of the platform will be agreeable to major game makers.