I did have the Cradle of Filth 'Jesus Is A Cunt' t-shirt, with the nun masturbating with a crucifix on the front, but that was when I was like 15 and it doesn't fit me any more. Shame, as it pissed off a lot of people and made me laugh. No way I can post a pic of it here though.
Ones that I still have include:
Textures
Children of Bodom
Annotations of an Autopsy
Guns n Roses
Anterior
SikTh
Trivium
Dream Theater x 2
Less Than Jake x 2
Metallica
Death
Rage Against The Machine
Avenged Sevenfold
Arch Enemy
Between The Buried And Me x 2
The Distillers
Gojira
Pantera
Evile
and I think that might be it, although I've lost and thrown away a fair few more over the years. I love band shirts, although recently I also got a few classic horror film t-shirts, the favourite of which I am wearing right now, but will remove just for you people