What's cooler than a Rubik's cube? A melting Rubik's cube on Sheldon's shirt. If you want to be as cool as Sheldon from The Big Bang Theory, this is just one of those shirts you're going to need. This officially licensed shirt is perfect for any geek or any fan of The Big Bang Theory and Sheldon can be seen wearing it on the Big Bang Theory in Season 5, Episode 11 (The Speckerman Recurrence).