More hype for the new Batman movie means more bucks for the producers, so it is little wonder that we found this Dark Knight light-up tee. The shirt is made of 100% cotton and has a small unplugable battery pack for washing. The clever t-shirt goes from glow to pulsating and requires 2 AAA batteries (not included.) There is also a Joker version available. Temporarily out of stock, you can pre-order each of the shirts for £19.99 ($~39.00,) in time for the movie premiere in July.