Battlestar Galactica: The Plan
The fall of the Twelve Colonies of Kobol (and subsequent events) as seen from the Cylon side.
Edward James Olmos does a cameo as commander William Adama, and serves as the film's director.
The miniseries aired October 27, 2009, on the SyFy Channel.
Buy on Blu-Ray or DVD
"Battlestar Galactica: The Plan" is included in the complete series boxed sets (Blu-ray and DVD) that were released in April 2010 and later: