This one's my favorite, hands down:
This is a close second, though:
And those aren't even my only U2 t-shirts:
I even have a U2 crew t-shirt that I bought for my brother, back when he was going through a phase where he liked to wear employee shirts from places that he did not work. But I never did give it to him.
The second-largest number of t-shirts are from the Goo Goo Dolls. But that makes sense, considering that I've probably seen them the most of any band. Heck, I saw them four times on the same tour -- but I only bought one t-shirt then, and it's the one I cut up:
I'm pretty sure that I had another one -- a white t-shirt -- but I can't find it.
Next, I have two Beatles shirts:
Admittedly, I wasn't around to go to these concerts. But they still count, right?
After that, in alphabetical order, AC/DC, Bon Jovi, Counting Crows, Dave Matthews Band, the Doors, Pearl Jam, and Poison:
So, that's my collection of concert tees. It's only a small portion of a vast collection, though. Maybe later I'll post pictures of my four different CBGB's t-shirts.
Update: I sent the picture of my favorite in to Pop Candy, and they posted it.