Shirts I scored so far:

Spoilt (x2)
The Morning After
The Communist Party
Run, Scientists, Run!
The Sound of Silence
Marshmallow Factory
Radios
Fire and Ice
A Salt and Battery
Put The Needle On The Record
Beelzebub
The Beginning
Secrets of Mensa
Pessimist or Optimist?
Clockwork Kit
Scare List
In Case of Zombies
Now That's Dope
Haikus are Easy, But...
Don't Play with Matches
I'm Not Afraid of the Dark
Spatter in D Minor
Un Cencored
Gramodog
It Makes Toast
One Of These Days, We'll Fly Away