I think I'm insane to even think about it, but writing 50,000 words in November sounds interesting. Midterms for the Fall semester should be done by then, so I think it'll be a nice challenge... Of course, it's August at the moment. >.> Who knows. I was going to try last year but couldn't think of anything.
Those of you who want to know details, there's a site:
http://www.nanowrimo.org/