I just passed 50000 words a few minutes ago. I pretty much hit the end of the novel exactly at the end of the 50K. Of course, I still need to go back, graft it on the prequel piece that I wrote for NaNoWriMo 2005 and do a cursory edit/reformat before printing it out for my beta readers (Mum and Sis, first). This does feel like a stronger story than the one I wrote in 2004, so more likely to survive the editing process and much more likely to be submitted to publishers afterwards.
In the meantime, I'm going to shower, eat leftover Thanksgiving dinner, go to a movie, and then celebrate my brother's birthday.
Thank you everyone, for your support. I can honestly say that you made the difference between giving up and going on. THANK YOU!