Name That Font
This is one of the coolest iPhone app ideas I’ve seen in awhile. WhatTheFont takes a photo and then identifies the font in that photo within seconds. Plus it’s free.
Speaking of iPhone apps, here are a few of my other recent favorites: Boomshine (a port of the game I mentioned last month), TwitterFon (the best Twitter client I’ve used yet for the iPhone) and Amazon’s iPhone app (I mentioned the drunk purchasing the other day).

Hi, I'm 
The game Trace for iPhone is my favorite. Very low impact. Kind of cerebral. Challenging. And there is no “lose” – you just keep trying until you succeed. http://threevue.com/2008/11/01/review-free-iphone-game-trace/
Try Tweetie, it’s soooooo good. Prolly the only reason I still tweet. :)