I find that Nerdy Tees a way of identifying my people as well. The more specific the Tee the better. Then there's people who have the tees who don't get the references themselves. I caught someone wearing the sci-five t-shirt and had no clue what Hijinksensue was. Blasphemy!
Amazing! Just got my tix for the Con up here and watched the entire Fifth season of Dr. Who. WHY DO YOU READ MY MIND WATSON?!?
Congrats on your employment liberation anniversary!