CafePress, an online retailer specializing in user-designed products, revealed that they have partnered up with Microsoft to create custom Xbox LIVE Avatar gear. Through the CafePress website, you'll be able to pull over your own avatar and have them emblazoned on a T-shirt, water bottle, and other pieces of merchandise. You'll also be able to pose them in action shots, with them running or power sliding across the ground in T-shirt form...