Trivia: Best known for playing Cdr. John Crichton on Farscape (1999-2003) and Lt. Col. Cameron Mitchell on Stargate SG-1 (2005-07). Family owns and operates NASCAR race cars. Wanted to be an astronaut while growing up. Studied at the Central School of Speech and Drama in London. Played Leonardo in a 1989 London production of The Merchant of Venice that starred Dustin Hoffman; in 1990, the production moved to Broadway. Made his movie debut with a small part in 1990's Memphis Belle. Had a recurring role on Party of Five as Sam Brody during the 1996-97 season. Was originally cast to play football coach Red Raymond on the CW drama Hellcats in 2010, but dropped out so he could focus on films.

Trivia: Dreamed of playing professional hockey as a teen. Studied business in college but switched to theater after failing a calculus course. Was inspired to pursue an acting career after seeing future Stargate SG-1 costar Richard Dean Anderson shoot a scene from MacGyver on a Vancouver beach. Performed at the Stratford Shakespeare Festival for two seasons. Met his wife, Lexa Doig, while guest-starring in an episode of her sci-fi series, Gene Roddenberry's Andromeda. Played hockey on the Stargate SG-1 team that competed against other productions, such as Smallville, that also shot in British Columbia.

Trivia: Parents wanted her to pursue a career in science. Appeared in stage productions of Steel Magnolias, Children of a Lesser God and Noises Off. First TV job was an appearance in a 1989 commercial for the Canadian coffee-and-doughnut chain Tim Hortons. In the early 1990s, cofounded the Canadian comedy group Random Acts, with Katherine Jackson and Anne Marie Kerr. Won a Canadian Comedy Award for Best Actress in the 2006 film Breakdown. Received Gemini Award nominations for her work on Stargate SG-1 (2001) and Sanctuary (2009). The Gemini Awards honor excellence in Canadian TV.

Trivia: Played football for the University of Oregon. Had guest-starring roles on MacGyver and The Fresh Prince of Bel-Air before becoming a regular on Sirens. Voiced characters in the series X-Men: Evolution and Action Man. Wrote four episodes of Stargate SG-1 while appearing on the series as Teal'c.

Trivia: The son of actor Lloyd Bridges, Beau Bridges (born Lloyd Vernet Bridges III) was actually named for his father; the nickname "Beau" was borrowed from Ashley Wilkes' son in Gone With the Wind. Beau received good billing for his secondary juvenile role in The Red Pony in 1949, although he was primarily seen in bit parts during the late '40s. This suited him fine; not all that interested in films, young Bridges had aspirations of being a basketball star. Despite being only 5'9", he played on the U.C.L.A. basketball team and at the University of Hawaii. But realizing that his height would always hold him back in professional sports, Bridges returned to acting via a small role on his father's TV series Sea Hunt. He made his stage debut in 1966's Where's Daddy and continued appearing in leading film roles throughout the 1960s and '70s, easing into character leads. Bridges directed two feature films, The Wild Pair (1987) and Seven Hours to Judgment (1988), in addition to the TV special The Thanksgiving Promise, in which virtually the entire Bridges clan (including his mother Dorothy) was cast. Bridges received Emmy and the Golden Globe awards for his portrayal of the title character in the 1992 TV movie Without Warning: The James Brady Story (1991), and won awards for his participation in the gloriously-titled made-for-cable The Positively True Adventures of the Alleged Texas Cheerleader-Murdering Mom (1993). He would continue to appear prominently both on the big and small screens over the coming decades, on shows like The Agency and Stargate: Atlantis and in films like The Good German and The Ballad of Jack and Rose.

Trivia: The handsome and sturdy Hispanic-American actor Alexis Cruz chalked up an impressive array of bit and supporting roles from the 1980s onward -- mainly in A-list Hollywood features, and usually of an ethnic nature. He appeared very briefly as Charlie in James Toback's woefully underrated freewheeling comedy The Pick-Up Artist (1987), with Robert Downey Jr. and Molly Ringwald, and -- that same year -- played an equally small role in Arthur Hiller's female "buddy comedy" Outrageous Fortune, starring Shelley Long and Bette Midler. Cruz survived enlistment in a couple of ugly and unmemorable productions, including the 1988 family-oriented telemovie Gryphon and the 1989 Robert Wise musical Rooftops, then shifted gears somewhat and made a fast track for the small screen. On television, Cruz is probably best known as Skaara and Klorel on Stargate SG-1; his resumé also includes guest spots on such blockbuster series as NYPD Blue and ER and more prominent roles on Touched by an Angel and American Family. In 2006, Cruz received one of his highest billings to date as the impossibly hip and street-smart Martin Allende, a member of attorney Sebastian Shark's (James Woods) legal team.

Trivia: Enrolled in college, but quit after only three weeks in order to concentrate on acting. An action figure was created for Aeryn Sun, the character she played on Farscape from 1999 to 2003. Won a Saturn Award for Best Actress in 2004 for Farscape: The Peacekeeper Wars. Had a recurring role on ninth season of Stargate SG-1 before joining the cast a series regular for the 10th and final season; she later reprised her role in two direct-to-DVD films.

Trivia: Lived in Jamaica until moving to Canada with his family in high school. Began acting with the Jamaican-Canadian Association. His first play was Whose Line is It Anyway when he was in his 20s.