These are, like, the best apps for the iPhone 3G:
1. iMapMyRun- coordinated with mapmyrun.com. gets best reviews among GPS apps. works great for biking as well.
my profile2. Urban spoon- awesome interface for dining out
3. Brain tuner- Great way to blow dust off alchaholically damaged cells and things
4. Facemelter- make your friends look fatter than you!
5. Pandora- plus your iphone into your favorite docking station and your guests will think you have taste!
6. iLighter- infinitely handier than a bic next time night ranger hits your local pool hall...
7. Ambiance- Fall asleep to the sounds of craw fish and lightning bugs (neither of which make sounds) every night- even if you live in East Oakland!
8. Holdem- great interface.
9. yelp= yelp (must have).
10. Imidgetfucker*
11. iSpearstracker- uses standard GPS interface to plot safest route home while avoiding path from the mission to pacific heights, from 1-4 AM...
12. ibirthdatecalculator- great for bars- you enter in your (stated) age and the iphone calculates your birth date (GR developed this one)!
*still in mini beta...