So I found out about this on the NaNo Forums. It's a website that some of the writers use to get themselves into the groove or out of a rut or just to improve speed.
Basically, you set your desired word count, your desired time limit, and then your level of consequences. Supposedly, the screen can turn red, make an awful noise, and then just repeatedly go, "write, write, write" if you stop and set your limits correctly.
It's nice, though. I've tried it and it's definitely moving me along in this part of the book. Might be an interesting idea for those who find that they just can't get going.