Sheldon Coopers 'Radar' Shirt

Here we have an awesome shirt that I really wanted to find and couldn't (dangit). Searched everywhere for it — nada. Apparently it's a work of the Buffalo David Bitton brand, though, and it's entitled 'Radar'.

Featured on The Big Bang Theory episodes

S02 E04: "The Griffin Equivalency"
S02 E21: "The Vegas Renormalization"