Some really great docs there, but my personal favorite is probably the hour long Sleepless Nights: Revisiting The Slumber Party Massacre. I thought the entire thing was incredibly fun, straight-to-the-point, and left me wanting more. I usually don't watch these docs more than once, but I could see myself revisiting this. Would love to see similar docs on Night Of The Demons or Sleepaway Camp.
I didn't want to throwaway my vote on "Other" though, so I went with Crystal Lake Memories. I could watch Jason related material all day. Honorable mention goes to More Brains though, as I really enjoyed the 30 minute segments on ROTLD II and III in the extra features. Can't imagine either of these movies getting a special edition release, so it's nice to have some coverage on them.
And LOL at anyone who votes for Room 237. What a joke.