Idunno if anyone has said it, but Cuberunner is awesome. I also believe there's a sequel out for Cuberunner, not sure if it's free though.

ive had my iphone for a month and a half, and still have not set up an apps account

no apps 4 me

Get touch hockey i LOVE it

OK, do NOT download iBasketball! It crashes my iPod Touch a few times and it really does suck. Also, another good one that I forgot to mention is drummer. It's pretty fun if you buy it, cus you have a bunch of sets and its kinda cool.

Trism.

One of the best apps I've used on an iPhone/iTouch.

Someone said it but definitely crayon physics so entertaining

There is this other one but cant remember what its called

Cuberunner is indeed awesome, but the sequal costs 2.50 USD I believe.

Strategery is pretty good too, if you are a fan of Risk based games like Lux.

Crayon physics.

it is soo much fun, i played for like hours. it is 10x better on touch than on a computer.

Get Touchgrind.

i believe the 3 main games are:

jellycar
ishoot (the real versions is worth the buy)
taptaptap

there are also lots of non-gaming applications that you can use. they do things like reognise a picture of a book, recognise music, flashlight, carpenters tool, lots of how toos (drinks, foods, quik fixes).