Cool iPhone/touch Apps, what do you like?

Originally Posted by rack04

Any tips on making cheap international calls using the iphone connected via wifi? My wife and I are going to Mexico in a couple weeks and I want to call home occasionally.

Justin, ATT started allowing VOIP over 3G about a month back, several apps (Fring, etc) are updated to do this now. Might be the cheapest way to do this.