Last weekend to apply for Thiel Fellowship
thielfellowship.org
thielfellowship.org
If you do get $100k to spend 2 years working on whatever amazing things you can think of, it's obviously great.
If were under 20 I would definitely apply, even if I were a student at a top-tier school (actually, especially if I were). It's not as if you can't go back in a few years if that is the best thing for you at the time, but getting a chance to spend 2 years exploring a business, technology, or other interest is the best possible way I can think of spending 2 years.