Torri Higginson

Sarah Victoria "Torri" Higginson (born Burlington, Ontario, December 6, 1969) is a Canadian actress. She is best known for her roles in the "TekWar" movies and series, "The English Patient", "Bliss", and "Stargate Atlantis". 
Career.
Higginson took over the role of Dr. Elizabeth Weir from Jessica Steen in a guest spot on the season eight opener of "Stargate SG-1". She was then carried over as the leader of the Atlantis expedition on "Stargate Atlantis" and played that role until the end of the show's third season. She was reduced from a main cast member to a recurring role in the fourth season. She did not play the role for the show's fifth season.