One of my favorites

Im not usually a helicopter kind of person, but this game looked cool, and the developer is a cool guy also, so I bought this, as well as the iPhone version.
I must say, that this is one of the most fascinating games on the casual side that Ive played. The graphics are great. Not cartoony, but still soft and pleasing to the eye.

The absolute coolest part of this game for me so far is using the iPhone as a remote to control the chopper with the iPhones accelerometer. It works beautifully. Seriously, Im impressed by how smooth the whole system works, and I am very much eager for more games to have similar "iPhone-as-controller" functionality.
(of course, the game is still just as awesome with a keyboard, but its one of those extra "holy crap, this is neat!" factors, you know?)

And as of this writing, Chopper 2 on iPhone and Mac are only $1 each, so its a no-brainer to try it out. I doubt youll be disappointed.

LN3000 about Chopper 2