No, this one is nothing like scifibigbang ...it's simple, fun and addicting (well, for me anyways, LOL)

I give you 10fics_10words .

Simply put, you write ten fics in ten words. There is a list of categories (angst, AU, etc.) and you write a fic for it.  Write a set for a pairing, a character, whatever. So go, have fun and let your creative juices flow. 

You never know when one of them sentences will prompt an entire fic. :D :D

Angst: He wondered again how he could have left her behind.
AU: Cortana, Spartan-085, nodded to John. She was ready to fight.
Crack!Fic: Cortana played elevator music through his speakers during the mission.
Crossover: “Cortana, can’t you just use the Force?” John asked.
Friendship: “Face it, Chief, you’re stuck with me.” “Well…good.”
Fluff: He wondered when Cortana became more important than vengenance.
Humor: “A Spartan, a ODST and a Grunt walk into a bar…”
Hurt/Comfort: Losing consciousness, he knew she would keep him safe.
Romantic: They were alone and lost but neither seemed to mind.
UST: She couldn’t touch him, but he still felt her.