If you are an enrolled student (with a .edu email address OR a student ID card) and purchase a new Windows 7 PC over $699, you'll receive a FREE Xbox 360.
Online participating retailers: Dell.com, HP.com or Microsoft Store
In-store participating retailers: Best Buy or any Microsoft Store
Details here: Students, We’ve Got You Covered (from the Windows Experience blog)
This was first brought to my attention by Larry Hryb, Xbox LIVE's Major Nelson (Director of Xbox LIVE Programing) on his blog: Students: buy a Windows 7 PC get a FREE Xbox 360
Edit: I've removed the start date (Sunday, May 22, 2011) from the title as it starts soon enough that I don't think it is needed anymore.
Edited by lightsup55, 24 May 2011 - 08:56 PM.