"Miskatonic Cocktail Club: The stars are always right... for a drink."
http://www.sighco.com/
I met the guy who runs this site this past weekend, he was one of the vendors up at the Texas Frightmare convention, of course. Very cool guy, I talked with him for awhile about The Call of Cthulhu silent film which he is a big fan of too. Be sure to check out the Lovecraft themed designs and the other random weird occult stuff like the Knights Templar logos. He and his wife do most of the t-shirt designs themselves, and a lot of them are really great. (I bought a shirt with the Aztec Cthulhu design on it, which rocks! And I really need the "Unknown Kadath Mountaineering Club" shirt as well. Haha!)
Anyway, check out his site, you will get a good laugh from some of the shirts, even if you don't end up buying anything. ;)