sgabigbang is holding signups for all het and slash that's not Sheppard/McKay or Sheppard/Weir. If you have just been dying for motivation on your Lorne/Zelenka epic idea or you want to contribute epic art, tomorrow is the time to sign up starting at 10 AM EST on Wednesday March 12 (That's 9 AM CST and 7 AM PST and 4 PM GST).Artist sign up for the above is here and already underway. There is also a link to writer information on that page.
ETA: Corrected for clarity.