I got two at the same time, a Slipknot one with the slipknot guys faces (masked) in boxes on the front, and a Dimmu Borgir one with a weird skull thing on the front.
I got a few at the same time because I had to order them online a few years ago but the one that sticks out the most is a Pennywise one. Great shirt, but its starting to get some holes in it and I don't know how much longer it has.
Metallica - Master of Puppets... the sad part is... that out of all the good old metallica... I hated that one compared to the rest but it was all I could get around here. >.<
Just ordered a Nile shirt today... and I've been looking for a Bolt Thrower/Jungle Rot shirt forever... not to mention a white Bloodbath shirt.