Battlestar Galactica: Season 4.5 is the final 10 episodes of the Sci-Fi Channel's highly acclaimed reimagining of the 1970s show, including one of the more stirring and satisfying series finales in television history. Aired in January 2009 after a six-month hiatus, the half-season opens following the devastating revelation about Earth and with four of the final five Cylons revealed, including Tigh (Michael Hogan), Anders (Michael Trucco), Foster (Rekha Sharma), and Tyrol (Aaron Douglas). The uneasy alliance between humans and a pack of rebel Cylons, including Caprica 6 (Tricia Helfer) takes a quizzical turn when the former residents of Earth appear to be Cylon rather than human, and some of the final five begin to recall their past lives on Earth. Kara (Katee Sackhoff) has to call her own human status into question when she discovers a crashed Viper occupied by a corpse wearing her dog tags, and President Roslin (Mary McDonnell) and Admiral Adama (Edward James Olmos) battle their own despair and struggle to lead an emotionally devastated fleet. Capitalizing on the turmoil, Vice President Tom Zarek (Richard Hatch) and Felix Gaeta (Alessandro Juliani) organize a mutiny aboard the Galactica and Zarek makes an unbelievable power move against the Quorum of Twelve. But before they can carry out their plans for execution, a commando raid led by Kara and Lee Adama (Jamie Bamber) fighting side by side strikes back against the mutineers. That's the action high point of the half-season, as the show then seems to mark some time with such issues as babies and structural integrities until the three-part finale, which, despite a head-scratcher or two, manages to resolve its issues tidily. That viewers even get a rare glimpse of sunlight is kind of a reward for fans of this outstanding but relentlessly dark series. DVD features include extended versions of three episodes ("A Disquiet Follows My Soul," "Islanded in a Stream of Stars," and "Daybreak'), Ronald D. Moore's podcast commentaries for each episode, deleted scenes, David Eick's video blogs, and five behind-the-scenes featurettes. --David Horiuchi