Just in from EW's Michael Ausiello:
Starz has pulled the plug on Party Down and Gravity.
"After careful consideration, we've decided not to continue on with subsequent seasons of Party Down and Gravity, " says Stephan Shelanski, executive vice president of programming for Starz Entertainment. "We're grateful to everyone involved in the shows, and are proud to have had them on the channel. Starz remains committed to aggressively expanding our original programming lineup."