http://astartupsummer.com/
And received my first email offering an hour ago (thank you Carl!)
I'm a computer science student originally from Australia, trying to launch a bunch of prototypes and work on a mentorship program of mine this summer.
Check out more info here: http://relentlesslyresourceful.quora.com/A-Stanford-Startup-Summer-90-Days-to-D-Day
If you have any interest in hosting or even just grabbing a coffee, shoot me an email:
cjbarber at Stanford.edu
Also: any suggestions of things for me to do this summer?