Just come across this via the Birmingham Words website. WriteThis is a free piece of software for Windows that generates writing challenges. I've just downloaded it (9mb, so watch out if you're not on broadband) and hit the appropriate button. It's now given me ten minutes to:

Write a text wherein an election plays an important part. The main character must be someone with a special gift. The story takes place in a hospital. Base the story on your own political/religious beliefs.

And then the thing gives you a window to type your piece in, and even keeps track of the time. Pretty good for free, though don't come crying if your computer explodes. If you're a brave soul when it comes to this software downloading lark, why not give it a whirl and post some of your results here?

WriteThis (for Windows)