Amazon is offering a free 1 year subscription to Amazon Prime (Which usually costs $79 a year. Perks include free 2 day shipping, and $3.99 overnight shipping): http://amzn.to/bSH8jP
(url shortened with bit.ly)
This is being marketed towards college students but all you need is a valid .edu email address, so teachers and alumni might be able to benefit from this too (though the Terms of Service does say they have the right to ask for proof that you are a current student).
I apologize if you have already heard about this amazing deal. I just want to help spread the word on this before they stop offering it. I am not an employee of Amazon, nor do I gain anything from people signing up for this service.