By the way, I was successful for NaNoWriMo 2009!
My grand total was 50019. Not as high as 2008, but finished with more time to spare... and felt just as good! So, my record so far:
2007: 5,130 words
2008: 50,066 words
2009: 50,019 words
2010: tbd (yes, I'm doing it again)
Want to know more, or maybe even try it yourself? http://www.nanowrimo.org/