Season five of Stargate: Atlantis began airing July 11, 2008 on the Sci Fi Channel. The final season of the series concluded after 20 episodes. After being a regular character in season four Amanda Tapping (Colonel Samantha Carter) became a guest star in several episodes of season five. Robert Picardo (Richard Woolsey) joined the cast as a permanent character, as Woolsey assumed command of Atlantis. Jewel Staite (Dr. Jennifer Keller) was also promoted from recurring character to permanent cast member. Both Michael Shanks (Dr. Daniel Jackson) and Paul McGillion (Dr. Carson Beckett) appeared as guest stars in this season, with McGillion appearing in five episodes. Actress Torri Higginson did not reprise her role as Dr. Elizabeth Weir in the fifth season. Other season five regular cast members include Joe Flanigan, Jason Momoa, Rachel Luttrell, and David Hewlett respectively.
5 - 1Search and Rescue (2) Jul. 11, 2008
5 - 2The Seed Jul. 18, 2008
5 - 3Broken Ties Jul. 25, 2008
5 - 4The Daedalus Variations Aug. 01, 2008
5 - 5Ghost in the Machine Aug. 15, 2008
5 - 6The Shrine Aug. 22, 2008
5 - 7Whispers Sep. 05, 2008
5 - 8The Queen Sep. 12, 2008
5 - 9Tracker Sep. 19, 2008
5 - 10First Contact (1) Sep. 26, 2008
5 - 11The Lost Tribe (2) Oct. 10, 2008
5 - 12Outsiders Oct. 17, 2008
5 - 13Inquisition Oct. 20, 2008
5 - 14The Prodigal Nov. 07, 2008
5 - 15Remnants Nov. 14, 2008
5 - 16Brain Storm Nov. 21, 2008
5 - 17Infection Dec. 05, 2008
5 - 18Identity Dec. 12, 2008
5 - 19Vegas Dec. 19, 2008
5 - 20Enemy at the Gate Jan. 09, 2009