Amazon has instituted a new program called "Amazon Student," which gives you a year's worth of Amazon Prime membership for free (free two-day shipping). All you need is a .edu address and to fill out a couple of questions (your state, your major, what year you're in, etc). The .edu address doesn't have to be your account address.
Since I still get most of my books from Amazon, I am excited. :) Finally, going back to school is worth something to me besides migraines, ulcers, epic study marathons, and sleep deprivation. ;)
http://www.amazon.com/gp/student/signup/info