If you've previously participated in Script Frenzy , the screenplay oriented sequel to national novel month (otherwise known as NanoWriMo) please note that they've moved it from June to April this year. That means it starts a week from today (is it symbolic that it's April Fool's Day?) on Tuesday, April 1, 2008.
They've also added some categories. According to the NaNoWriMo website,
"Now, in addition to original feature-length screenplays and stage plays, the escapade includes adaptations of novels, short film scripts, graphic novel and comic book scripts, and even radio dramas. As long as you cumulatively write 100 pages of script in April, you're a winner. " (the bold is mine)
So if you're considering it, get your scenes in a row and prepare to write 100 pages in 30 days. Don't know how to write a screenplay? They've got some excellent how-to advice on the website, along with reviews of software programs that will do the formatting for you. So if you're game, go over and sign up.