I can’t exactly say I knew him well (hardly at all) but the other Luis in a lot of my CS classes at Duke, Luis von Ahn, won a MacArthur genius grant. He’s the dude who co-invented the captcha and more recently the predecessor to Google’s Image Game. Very cool for him, and nice for Duke.
So now I’ve gone to high school with a Rhodes and college with a MacArthur. Wonder what Columbia will turn up :)