Give me an idea, and a story I shall write.
Simple ideas are better than plot.
Feel free to suggest a genre you’d like to see, or any wacky-ass rules you want to 
lay down. No words that begin with “q”, or each sentence must have exactly five words. [You can’t pick these because I already thought of them. :P]
Do it!
spell-sword.com 
Kill your main protag, but it can’t be some random act. It has got to be part of the story, but kind of unexpected – ala Martin.
I assume George R.R. Martin, not Steve Martin.
Right – GRRM. Of course, you can throw in some Steve Martin craziness too! 🙂
Pick a dirty joke and write a story around it. An old trick, but difficult to pull off.
Eenteresting…