"Battlestar Galactica: Revisited" (10pm) will serve up the essential information on the series’ past three seasons, providing the uninitiated with an introduction to the characters, relationships and spine-tingling drama that have captured the imagination of audiences around the world. "Galactica’s" executive producers, Ronald D. Moore and David Eick serve as guides, providing insights and revelations about the critically-acclaimed series.

"Battlestar Galactica: The Phenomenon" (10:30pm) is a celebrity-studded celebration of the show’s impact on pop culture. Interviewees, including Seth Green, country music’sTop Male Vocalist of 2007 Brad Paisley, and The Soup’s Joel McHale, and others, wax poetic about why "Battlestar Galactica" is one of the best frakkin’ shows on television.

As season 4 opens, the last remnants of humanity continue their search for a new home, the thin line that separates them from the rapidly evolving Cylons is being redrawn. "Galactica’s" crew, rocked by Starbuck’s sudden and mysterious return from the dead and her claims that she has been to Earth and can lead them there attempts to make sense of the inexplicable. Meanwhile, four members of the fleet are still reeling from the revelation that they are Cylons and have been all along.