Question: in "Chuck Versus the Dream Job", Stephen J. Bartowski is played by the star of what other science-fiction television series?

Context articles: Chuck Versus the Dream Job
Scott Bakula
Chuck Versus the Seduction Impossible
List of Chuck episodes
Chuck Versus Tom Sawyer
Chuck Versus the Sensei
Chuck Versus the Ring: Part II
Chuck Versus the Ex
Sarah Walker (Chuck)
Chuck Versus the Living Dead

"Chuck Versus the Dream Job" aired on April 6, 2009.
 It is the 19th episode of the "Chuck" series' second season.
 The protagonist Chuck, played by Zachary Levi, interviews for a job at Roark Industries with the goal of hiring on to investigate a possible computer virus, while his father, Stephen J. Bartowski, (Scott Bakula) returns home.
Scott Stewart Bakula ( ; born October 9, 1954) is an American actor and director best known for his lead roles in two science-fiction television series: as Sam Beckett on "Quantum Leap" (for which he received four Emmy Award nominations and a Golden Globe Award), and as Captain Jonathan Archer on "".
"Chuck Versus the Seduction Impossible" is the fourteenth episode of the fourth season of "Chuck".
 It originally aired on February 7, 2011.
 This episode followed the intended season finale, "Chuck Versus the Push Mix", making it the first of an additional eleven episodes ordered.
 Chuck Bartowski, Sarah Walker, and John Casey are sent to Morocco to rescue old friend Roan Montgomery (John Larroquette), while Morgan Grimes meets Alex Hugh's (Mekenna Melvin) mother (Clare Carey) and Mary Elizabeth Bartowski (Linda Hamilton) tries to reconnect with her family.
"Chuck" is an American spy action-comedy-drama television series created by Josh Schwartz and Chris Fedak.
 It premiered on the terrestrial television network NBC on September 24, 2007, airing on Mondays at 8:00 pm ET.
 "Chuck" centers on Chuck Bartowski (played by Zachary Levi), an "average computer-whiz-next-door", who receives an encoded e-mail from an old college friend now working in the CIA; the message embeds the only remaining copy of the world's greatest spy secrets into Chuck's brain.
 The first season of "Chuck" aired in 2007–08, containing 13 episodes.
 After the 2007–08 Writers Guild of America strike, NBC renewed "Chuck" for a second season instead of extending the first to a full season of 22 episodes.
 The full-length second season originally aired in 2008–09.
 Episodes of "Chuck" are also available in various new media formats.
 The first through fifth seasons are available to purchase on DVD and Blu-ray.
 In the United States, United Kingdom and Canada, every episode is available for download from iTunes.
 Episode titles for "Chuck" are consistently formatted as "Chuck Versus...".
 For example, the pilot episode is titled "Chuck Versus the Intersect".
 This list is ordered by the episodes' original air date and not by the production codes, which show the order in which episodes were filmed.
 On May 13, 2011, NBC renewed "Chuck" for a fifth and final season consisting of 13 episodes.
 The series concluded with a two-hour finale on January 27, 2012.
"Chuck Versus Tom Sawyer" is the fifth episode of the second season of "Chuck".
 It originally aired on October 27, 2008.
 Life in espionage takes its toll on Chuck Bartowski and everyone is taking notice.
 Chuck tries to explain his unusual behavior to Ellie Bartowski and to the quirky Buy More efficiency expert Emmett Milbarge (Tony Hale), but a new assignment only complicates things.
 After a global terrorist comes searching for Jeff Barnes, Chuck is forced to socialize with Jeff in order to find out what role the oddball plays in the mission.
"Chuck Versus the Sensei" is the ninth episode of the second season of "Chuck".
 It originally aired on December 1, 2008.
 Chuck Bartowski is still reeling from the discovery that his ex-girlfriend Jill Roberts was a Fulcrum agent and goes on a mission to take his mind off of his shock.
 John Casey gets a shock of his own when he finds out that his sensei Ty Bennett (Carl Lumbly), who taught him everything he knows, is now one of the most wanted rogue agents.
 While on the search for Bennett, it becomes clear that Casey may be too emotionally involved to continue with the mission.
 Meanwhile, Devon Woodcomb's parents Honey (Morgan Fairchild) and Woody (Bruce Boxleitner) make a surprise visit to help Devon and Ellie Bartowski plan their wedding.
 At the Buy More, Emmett Milbarge (Tony Hale) reinstates the employee of the month contest, but Morgan Grimes, Jeff Barnes, and Lester Patel have other plans.
"Chuck Versus the Ring: Part II" is the 19th episode and season finale of the third season of "Chuck".
 It was originally aired May 24, 2010 in a special two-hour block with "Chuck Versus the Subway".
 Team Bartowski escapes execution by Shaw, thanks to Morgan and Devon.
 Learning from an imprisoned General Beckman that the Ring Elders are going to be at a spy convention to take over the CIA and NSA, Team Bartowski prepares to capture the Elders and expose Shaw.
 Meanwhile, Big Mike receives some serious news about the Buy More.
"Chuck Versus the Ex" is the sixth episode of the second season of American television series "Chuck".
 It originally aired on November 10, 2008.
 Chuck Bartowski runs into his ex-girlfriend Jill Roberts (Jordana Brewster) while on a Nerd Herd call.
 In an attempt to save face, he lies to the girl who broke his heart and tells her that he is more successful than he really is.
 When Chuck flashes on Jill's boss, a research scientist who may have developed a deadly bio-weapon, he, Sarah Walker, and John Casey must find out if Jill is involved.
 Meanwhile, at the Buy More, Big Mike nearly chokes to death, which leads company efficiency expert Emmett Milbarge (Tony Hale) to implement a mandatory CPR course taught by Devon Woodcomb.
Sarah Lisa Bartowski (f/k/a Walker) is the alias of one of the main characters of the television show "Chuck" on NBC.
 She is portrayed by Yvonne Strahovski and is one of two agents assigned by the NSA and CIA to protect Chuck Bartowski after he unwittingly downloads the secret government computer known as the Intersect into his brain.
 Throughout the series, she is Chuck's primary love interest and initially poses as Chuck's girlfriend to conceal their identities as spies from the public.
 In the Season 4 finale, "Chuck Versus the Cliffhanger", Chuck and Sarah were married, dismissed from government service, and given ownership of Volkoff Industries, with which they bought the Burbank Buy More and the secret Castle base thereunder.
 During the final three episodes of season 5, Sarah gets her memories suppressed due to a faulty Intersect upload, the signs of recovery from which are exhibited throughout the final episode.
"Chuck Versus the Living Dead" is the 17th episode of the third season of "Chuck".
 It was originally aired May 17, 2010.
 Chuck has another dream which he interprets as indicating Daniel Shaw may actually be alive.
 Tension mounts as he, Sarah, and Casey search for the truth surrounding Shaw's supposed death.
 Meanwhile, Stephen Bartowski (Scott Bakula) returns and discovers Chuck is still a spy, while Ellie continues to be manipulated by Justin.