iPhone Carrier Logo - Gimme a Z
 

So the iPhone 4S jailbreak has been out for a bit and there's a nifty program called Zeppelin that allows you to replace your boring carrier text with a logo.

End Result:

http://www.the370z.com/members/cbric...rrier-logo.jpg

That has to be the most useful app ever for the iPhone. Other than the beer finder apps.