Question: In the made-for-television comedy film which premiered on January 7, 1975, who co-starred with the actress who had previously played the role of Agent 99 in a 1960s sitcom?

Context paragraphs:
Get Smart, Again!: Get Smart, Again!  is a 1989 American made-for-television comedy film based on the 1965–1970 NBC/CBS sitcom "Get Smart!"  starring Don Adams and Barbara Feldon reprising their characters of Maxwell Smart and Agent 99.  It originally aired February 26, 1989 on ABC (the network that rejected the original pilot for "Get Smart!")  and has subsequently been released twice on DVD by different publishers.  In the video release of the movie, the laugh track is absent.

Laura Lansing Slept Here: Laura Lansing Slept Here is a 1988 American made-for-television comedy film starring Katharine Hepburn and directed by George Schaefer which premiered on NBC on March 7, 1988.  It was written by James Prideaux and co-stars Joel Higgins, Karen Austin, Brenda Forbes and Hepburn's grandniece Schuyler Grant.

Barbara Feldon: Barbara Feldon (born March 12, 1933) is an American character actress who works mostly in the theatre, but is primarily known for her roles on television.  Her most prominent role was that of Agent 99 on the 1960s sitcom "Get Smart".  She also worked as a model.

Return to Green Acres: Return to Green Acres is a 1990 American made-for-television comedy film based on the 1965–1971 sitcom "Green Acres" which premiered on CBS on May 18, 1990.  It stars all the then-surviving original cast (Hank Patterson (Fred) and Barbara Pepper (Doris Ziffel) died in 1975 and 1969 respectively).  The movie starts with the original opening credit sequence from the series, but in a sepiatone color to tell you that it's been a while since the TV show ended.  The sequence turns to color with an added section to the theme song, which is when we see a 20-something year old Arnold the Pig, putting flowers on Doris Ziffel's grave.  The Douglas' trusty farmhand Eb (Tom Lester) has married a girl named Flo.

Return to Mayberry: Return to Mayberry is a 1986 American made-for-television comedy film based on the 1960s sitcoms "The Andy Griffith Show" and "Mayberry R.F.D.".  The film premiered on April 13, 1986 on NBC, and was the highest-rated television film of 1986.  Sixteen of the original cast members reunited for the film and its success could have led to additional Mayberry programs, but Griffith was committed to "Matlock" (also airing on NBC at the time) for the 1986-87 season.

The Castaways on Gilligan's Island: The Castaways on Gilligan's Island is a 1979 made-for-television comedy film that continues the adventures of the shipwrecked castaways from the 1964–67 sitcom "Gilligan's Island" and the first reunion movie, "Rescue from Gilligan's Island", featuring the original cast from the television series with the exception of Tina Louise, who was replaced in the role of Ginger Grant by Judith Baldwin.  Written by Al Schwartz, Elroy Schwartz and series creator Sherwood Schwartz and directed by Earl Bellamy, it was first broadcast on NBC May 3, 1979.  Unlike the independently-produced "Rescue from Gilligan's Island", this and the subsequent "The Harlem Globetrotters on Gilligan's Island" were produced by Universal Television.

Get Smart (1995 TV series): Get Smart is an American sitcom sequel to the original 1965–1970 NBC/CBS sitcom "Get Smart" starring Don Adams and Barbara Feldon reprising their characters of Maxwell Smart and Agent 99.  The series aired Sunday at 7:30 pm on Fox for seven episodes from January 8 to February 19, 1995.

The Feminist and the Fuzz: The Feminist and the Fuzz is a 1971 American made-for-television comedy film starring Barbara Eden (in her television film debut), David Hartman, Jo Anne Worley, Herb Edelman and Julie Newmar.  It premiered as the "ABC Movie of the Week" on January 26, 1971.  The film was directed by Jerry Paris.

Let's Switch!: Let's Switch!  is a 1975 American made-for-television comedy film starring Barbara Eden and Barbara Feldon written by Peter Lefcourt and directed by Alan Rafkin.  It premiered as the "ABC Movie of the Week" on January 7, 1975.

National Lampoon's Christmas Vacation 2: National Lampoon's Christmas Vacation 2: Cousin Eddie's Island Adventure is a 2003 American made-for-television comedy film.  It premiered December 20, 2003 on NBC and stars Randy Quaid and Miriam Flynn reprising their roles as Cousin Eddie and Catherine, along with Dana Barron reprising her role as Audrey Griswold.  It is the sequel to the 1989 film, "National Lampoon's Christmas Vacation", although it is more of a spin-off than a direct chapter of the National Lampoon's "Vacation" film series, because Chevy Chase and Beverly D'Angelo did not appear.

Supporting paragraphs: Let's Switch! Barbara Feldon
Answer: Barbara Eden