Does anyone know any good apps for the iPod Touch? Preferably something useful/enjoyable that I won't delete in the first week

My favorite apps are Tap Tap Revenge 2, AirMaster, Wikipanion, and Stumble. Give those a try.

I really enjoy these:

-Brick 3d
-X-Plane (and all its variants)
-FML
-Flight control
-Poker (the one by Zynga)
-Bookworm

Light is the most amazing app ever!

I enjoy Hangman, FS5 Hockey and I have Wikiamo and a translator for looking up stuff.

All depends if you have it jailbroken.

I've got:
Metal Gear Solid
Assassin's Creed
UNO
Graph Calc
Facebook
Myspace
AIM
FML
BeerPong
Pandora
Zippo Lighter
Tetris
Genius

Those all are pretty fun.

-Flick Fishing
-Facebook
-Myspace
-Stick Wars
-Any Mob game

I like Sunflat's range of games...
Clickie!