The first picture is called Mafia Music. The second, Nerds Unite! These are both shirts you can buy on Threadless. Unfortunately, the Nerds Unite one is sold out right now, but if you request one, that'll add to the count, and they may reprint it sooner. You don't actually have to follow through and buy it just if you request it, but it helps those of us who want to buy it (hint hint!) to be able to do so sooner.

Hope you like the pictures!