Check out the shirts at www.thinkgeek.com, they have some really good ones. I spotted the coffee molecule shirt on Leonard the other night when we watched one of the episodes.....
Hello-- well, my best guess would be that that shirt has something to do with "The Green Lantern." The artwork isn't totally visable, so it's hard to tell, and I'm confused by the two marks that look a bit like tusks, but anyway; The Green Lantern may be among the lesser known Super Friends these days, but he actually played an integral role in the original Justice League and it's ongoing battle against the dreaded Legion of Doom. Sheldon made reference to The Green Lantern when he and Leonard found themselves unable to move the very large package that Penny had them sign for.
My other guess would have been Samurai Jack, but his trademark color is red and that was a newer cartoon with a somewhat less dedicated fan base.
Most of Sheldon's shirts feature super heroes; so far, Flash, Superman, and perhaps Aquaman if I recall?
Good luck on your quest. I'll come back if I find anything out.
I've been searching around, but can't seem to find it!!! My brother has access somehow to random t-shirts that tv characters wear, so i'll see if he can track it down. In my searching I came across a great t-shirt though that I think you'll like:
"There are l0 types of people in this world; Those who understand binary, and those who don't!!!"
Don't know if you found the shirts you were looking for yet, but thought I'd let you know about these two places
There are two great places for t-shirts. Superhero shirts such as the Green Lantern, The Flash, etc.. can be found at http://www.tshirtgurus.com
I've gotten shirts there several times including Heroes, Star Wars, etc... Really great service.
Science related t-shirts can be found at http://www.scienceteecher.com
I've gotten t-shirts from them too. Great service. Got my brother-in-law, who's a chemistry professor, the coffee molecule shirt
I heard the illuminati are muscling in on the Sheldon t-shirt action, I'm sure if if you follow the money it will lead to the Zurcih connection, there you must infiltrate the gnomes and learn the true meaning...
No, Travelocity's is more of a garden variety gnome. I think they are speaking of more powerful gnomes such as the gnomes of Zurich....but I could be mistaken.