I just tried something called "Write or Die." It's basically when you set an amount of time, and a wordcount goal, and see if you can make it in that time.
The twist is, if you stop writing at all for 10-15 seconds then, depending on the mode, it comes up with a pop up telling you to keep writing. You can't switch to other windows while the pop up is on or anything like that, or atleast I don't think so.
There are different modes too - like electrical shock mode. (I don't think that's even out at this point, but they have it listed. Probably not going to ever try that either thanks. I mean, imagine if someone got shocked when they stopped writing for a few seconds - that's horrible. Although I suppose it would motivate people more than the other modes..)
But yeah, I set it to 30 minutes with a goal of 500 words. I got 623.

I got about the same amount done in that 30 minutes as I have for the whole day so far.. That's pretty sad. I guess I end up procrastinating on forums and stuff..I really have to fix that, so I'm probably going to do the WoD for 1 hour a day.