I didn't make the substantial word count progress I was hoping for this weekend, so now I'm finally starting to worry about "winning" NaNo this year. :( I'm not giving up, though!
For short-term motivation, I'm using the list of Seattle participants, sorted by word count. I'm on the 14th page and steadily working my way up the list. Every couple minutes of writing, my word count becomes higher than the next person on the list and I'm a little bit closer to my goal.