Yeah, I do that too! It seems the best ideas come to you just as you fall asleep. But personally I just never actually write it down. And your writing kick is great. I love it. 
The sad thing is... because I'm writing so much, my art work has suffered.
I haven't drawn but two new pics in the last year or so. I was spitting out illustrations like a machine there for a while. I have been doing alot of photo taking but nothing I can sell although I do need to go through and fix a few for my zazzle shop.
May take a day off the fan fics to get another idea... see if I can find something exciting to write about.
Neal: I want to buy a bakery.
Mozz: I like donuts.
Neal: Hot and fresh, just the way momma made them.
Mozz: Bear claws?
Neal: Breakfast, Lunch and Dinner.
Mozz: Mmmmm...
Neal: Right here.