Check out this awesome Justice League t-shirt featuring the one and only Dr. Fate! The t-shirt is featured on superherostuff.com. Here is the product summary from their site:
A fantastic design of some heroes you rarely ever see, Red Tornado, Martian Manhunter, Firestorm, Green Arrow and the Legendary Dr. Fate. Some sizes might not be in stock Measurements done on flat lying surface. 100% pre-shrunk cotton.
You can purchase the t-shirt here: http://www.superherostuff.com/dc-heroes-and-justice-league/t-shirts/justice-league-ii-t-shirt.html?itemcd=tsjla2
Finally, if you think the shirt looks familiar it's because you may have seen Sheldon of The Big Bang Theory wearing it on an episode: