For those of you who simply can't wait a week to be free from the chains of AT&T, FakeCarrier will at least give you visual satisfaction while you wait for that February 10th launch date. Found in Cydia in the pre installed Big Boss Repository, FakeCarrier from Eric of the mirror dev team allows you to change the wireless carrier name to whatever you would like.
Now the app itself has been around for a while as well as others like it, such as MakeItMine, but I figured this was a good time to remind everyone of this neat and simple iPhone program...