Oh I had too much fun with this site. Write or Die is a website and writing program that force you to write. Just keeps you on task to make sure you hit out those 500 words in 15 minutes or whatever other goal you set for yourself. The program is $20 to buy, and can be tried on their site with limited settings for free.
Write or Die forces you to keep pace with your chosen WPM by flashing color whenever you slow down too much, and playing startling sounds once you’ve breached the barrier. It forced me to just write. I had to free form as quickly as possible, and it did actually get my heart rate up. I’m not sure if I’ll buy the software or not yet, but I recommend everyone give at least the trial a try (no download, straight through your browser.) Unfortunately I lost my first attempt, but it was amazing how much it kept me on task. Give it a shot and let me know what you think! I’ll try and write another entry on a stricter time frame and see how the results work.