Here, let me return the favor
WeatherBug
MyLite (hey! Instant flashlight lol!)
JotNot Pro (takes pics of receipts, business cards, etc so that you can file them as documents later)
EverNote (all your notes, everywhere)
LegalHeat (reference of gun laws in all 50 states)
Gun Shops (geographically finds gun shops near you. There's a competing app that costs much more, but I like this one better)
CraigsPro (craigslist on the phone, surprisingly handy)
Osmos (a calming, yet addictive, game)
i3Hand21 (if Blackjack is your thing :-)
PvZ (iphone implementation of Plants vs Zombies - yay!)
RunKeeper - tracks your runs/walks, lets you see your progress in charts and maps (quite awesome)
Deep Green - for those times when I want people to think I know how to play Chess.
Math Ref - awesome mathematical/physics/chem reference (financial formulas too)
Yelp - find a cool restaurant in a new city!
IMDB - settle those bar arguments over what movies Sandra Bullock was in with Kevin Bacon
PS Express - Adobes very lightweight PhotoShop editor for the iphone
Guitar World's Lick of the Day - go beyond the basics
SoundHound - ever hear something on the radio and went "Who did that song?" - run SoundHound and it will listen and tell you!
Ocarina - because people always want to see you turn your iPhone into an Ocarina and blow into it (no, seriously, you BLOW into your iPhone to play it)