Early this year Geoff Johns (Green Lantern, Brightest Day) was promoted to Chief Creative Officer for DC Entertainment. Aside from writing some of the best books at DC, Johns was put in charge of finding ways to infuse the characters of the DC Universe into all faucets of entertainment including: TV, Movies, Animation and Video Games. Rather than whore their character to the highest bidder it seems that he has tried to infuse comic book culture into the mainstream.
Perhaps one of the least talked about examples of this has been character of Dr. Sheldon Cooper and his Green Lantern themed T-Shirts on the Big Bang Theory. Whether the shows has popularity amongst comic fans or not it has succeeded in making fans of the show ask about the shirts and there meaning.