I'm at 1400, and the only thing keeping me writing is a poetry idea I learned recently: pre-writing on a topic until actual fragments of poetry start to come out. Looking at what I've written as pre-writing with little bits that wouldn't have come out any other way helps keep me going.
To aid in this, I decided that I couldn't be looking at the page last night. If I'm looking at the page, I'm editing everything I write straight away. If I have my eyes closed, I know the keyboard well enough to write anyway. Plus, you know, darkness brings the mind of the writer closer to the oineric wellspring of myth.
And that's why my roommate thought I was writing in my sleep last night.