Cool iPhone/touch Apps, what do you like?

Wunderradio

tunewiki

midomiultra(a better but paid for version of shaazam)

Orblive (streams your tv, movies and music stored on your computer to your iphone over both 3g and wifi, for $9.99, forget about slingbox at 3 times the price and only works over wifi)

Newsstand (rss reader)

Ifitness

tv.com

Urbanspoon

Pocketuniverse (for those interested in astronomy. Uses the accelerometer and compass on the 3 GS to track your movements, as you turn to look at the sky you have a "what u see is what u get" experience. Very cool.