Here's the best one I've found so far, but it's rather expensive:

http://www.superwarehouse.com/Iomega...33356/p/696194



This one "only" has a 100 GB capacity, but it's a lot cheaper:

http://www.amazon.com/gp/product/B00...lance&n=172282

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram