My sole reason for owning a table would be for digital comics. comiXology is excellent on both Android and iOS (and your purchases are cross-platform!) While comiXology has Marvel and DC, they don't have some of the smaller and well known publishers like Dark Horse and IDW. Those are only on iOS and PSP.
As far as login security goes, the iPhone can be pretty slick. It can be setup so if someone enters the password wrong five times a secure wipe begins. Does anyone know of something that gives XP similar functionality? Tiggering remote wipe functionality like Exchange or MobileMe would be a huge plus too.
In a senior year class we actually used the leaked direct feed bootleg of Episode II to compare the CG to original trilogy and discuss the evolution of technology in film.