Stevie Dee from Crimson Coscrafts designed and printed an amazing Batsuit based on the design from The Dark Knight. He's currently working on Arkham Knight and Deathstroke suits, so he'll have some awesome stuff to show in the future.
Julian Checkley's Arkham Origins Batman cosplay is flat out one of the coolest things we've ever seen. The armor itself is 3D printed, and comes fully equipped with some incredible gadgets. Check it out: