Sheldon's Red Robot Evolution T Shirt from the big bang theory

Robot Evolution T-Shirt worn by sheldon

This Robot Evolution T-Shirt from the big bang theory,worn by Sheldon in Season 1, Episode 13 (The Bat Jar Conjecture); Season 2, Episode 8 (The Lizard-Spock Expansion); and Season 4, Episodes 3 (The Zazzy Substitution), 10 (The Alien Parasite Hypothesis)and 19 (The Zarnecki Incursion)
Remember, evolution is an ongoing process! Take the next step on the evolutionary ladder by watching "The Big Bang Theory" and ordering this t-shirt featuring the roommates' personal theory regarding the future of the human race. Anybody else looking forward to having metal claws?