I wonder if EA is going to release Madden for it. They've released versions of Madden previously for almost all Mobile platforms, but maybe they think the lack of a joystick/d-pad and buttons will hamper gameplay too much to spend their resources on it.
Yes, Madden is on the way. They mention it in their release notes that come with Tiger Woods.
The platform really isn't that bad for gaming... The touch screen controls seem to be the only drawback, but many of the games are pretty fun.
Games that I have on my iPhone:
iDracula - Interesting Diablo like game with guns
Touchgrind - Finger skateboarding.
MGSTouch - Metal Gear Solid
Space Ace - Yes, the classic Space Ace. Just like the arcade.
Resident Evil Degeneration - Pretty coool game. Touchscreen controls are a little hard to get use to at first.
Flight Control - Fun ATC (Air Traffic Control) type game. Just point the aircraft towards their landing zones. Quite a bit challenging.
Glyder - Tilt controls. Pretty fun and cool game. Very nice looking for a game on a phone.
Flying Aces - Tilt controlled game. Not bad, but I think Top Gun is better.
Pinball RC by Zen - Rollercoaster Pinball machine. View changes as you tilt the phone.
Top Gun - Pretty cool game. Great music. Tilt controls.
Peggle - It's Peggle on the phone! Addictive.
Galaga Remix - Pretty cool game. Controls sortta suck.
Tiger Woods - I just downloaded this. Haven't had a chance to play it yet. Getting pretty good reviews though.