In der TV-Serie ''Time Tunnel'' (1966-1967, u.a. mit [[James Darren]], [[Whit Bissell]], [[John Crawford]], [[Lawrence Montaigne]], [[Paul Carr]], [[Rhodes Reason]], [[Perry Lopez]], [[Peter Brocco]], [[Abraham Sofaer]], [[Malachi Throne]], [[Michael Ansara]], [[John Winston]], [[John Hoyt]], [[Paul Fix]], [[David Opatoshu]], [[Nehemiah Persoff]], [[Torin Thatcher]], [[Paul Comi]], [[Victor Lundin]], [[Theo Marcuse]], [[Warren Stevens]], [[Anthony Caruso]], [[Joseph Ruskin]], [[Arnold Moss]], [[Sheldon Collins]], [[Vince Howard]], [[Bruce Mars]], [[Elizabeth Rogers]], [[Arthur Batanides]], [[Robert Walker]], [[Paul Stader]], [[Bart La Rue]], [[Howard Culver]], [[Dick Dial]], [[Chuck Hicks]] und [[Gil Perkins]]) spielte sie als eine Hauptfiguren die Rolle der Doktor Ann MacGregor, in ''Barnaby Jones'' (1973-1980, u.a. mit [[Gary Lockwood]], [[Roger Perry]], [[Claudette Nevins]], [[Richard Derr]], [[Tim O'Connor]], [[Phillip Pine]], [[Alex Henteloff]], [[Paul Sorensen]], [[Walker Edmiston]], [[Vince Howard]], [[Andrew Robinson]], [[Mary Marj Dusay]], [[Don Keefer]], [[Richard Evans]], [[Darleen Carr]], [[Byron Morrow]], [[Joanne Linville]], [[Sharon Acker]], [[Kenneth Tobey]], Paul Comi, [[Meg Foster]], [[Laurence Luckinbill]], [[Robert Pine]], [[Paul Fix]], [[William Bramley]], [[Ken Lynch]], [[Jerry Ayres]], [[Bill Zuckert]], [[George Sawaya]], [[John McLiam]], [[Skip Homeier]], [[Sherry Jackson]], [[Richard Lynch]], [[Ellen Geer]], [[Glenn Corbett]], [[Peter Mark Richman]], [[William Smithers]], [[John Rubinstein]], [[Granville van Van Dusen]], [[Brooke Bundy]], [[Jason Evers]], [[Lawrence Pressman]], [[Stewart Moss]], [[Michael Strong]], [[Michael Zaslow]], [[Mariette Hartley]], [[Ward Costello]], [[William Sargent]], [[Charles Macaulay]], [[Bill Erwin]], [[Ian Abercrombie]], [[Jonathan Banks]], [[Stephen Brooks]], [[Susan Howard]], [[Bill Quinn]], [[John S. Ragin]], [[Eric Server]], [[Arch Whiting]], [[Jason Wingreen]], [[Andrew Prine]], [[Fritz Weaver]], [[Joseph Mell]], [[Lenore Kasdorf]], [[Erik Holland]], [[Joanna Miles]], [[Eugene Roche]], [[David Huddleston]], [[Ed Begley, Jr.]], [[Terri Garr]], [[Susan Oliver]], [[Joan Pringle]], [[John de Lancie]], [[Michael Durrell]], [[Kenneth Tigar]], [[Booth Colman]], [[William Shatner]], [[William Lucking]], Whit Bissell, [[Paul Lambert]], Paul Carr, [[Roy Jenson]], [[J. Patrick McNamara]], [[Gail Strickland]], [[Michael Bell]], [[Barry Jenner]], [[Ted Gehring]], [[Peter Brocco]], [[Hal Lynch]], [[Tony Plana]], [[Morgan Farley]], Howard Culver, [[Robert Miano]], [[Bruce Watson]], [[Gail Bonney]], [[Sharon Thomas]], [[Tania Lemani]], [[Dallas Mitchell]], Lawrence Montaigne, [[Madlyn Rhue]], [[Barry Russo]], [[Alfred Ryder]], [[Liam Sullivan]], [[Carl Byrd]], [[Robert Foxworth]], [[Steve Sandor]], [[William Schallert]], [[Meg Wyllie]], [[Harris Yulin]], [[Marc Alaimo]], [[John Anderson]], [[Stephen Collins]], [[Rosemary Forsyth]], [[Monte Markham]], [[Mitchell Ryan]], [[Barbara Baldavin]], [[Robert Ito]], [[Salome Jens]], [[Jonathan Frakes]], [[Mary McCusker]], [[Ray Wise]], [[Earl Boen]], [[Elinor Donahue]], [[Robert DoQui]] und [[Kenneth Mars]]) die der Betty Jones und in ''The Munsters Today'' (1988-1991, u.a. mit [[John Schuck]], [[Jason Marsden]], [[Daniel Riordan]], [[Gregory Sierra]], [[Graham Jarvis]], [[Herta Ware]], [[Mel Johnson, Jr.]], [[Steve Susskind]] und [[Charlie Brill]]) die der Lily Munster.

Neben ''[[Star Trek]]'' hatte Meriwether Gastauftritte in TV-Serien wie ''Alcoa Premiere'' (1962, u.a. mit [[Karen Steele]]), ''Route 66'' (1964, u.a. mit Glenn Corbett), ''Perry Mason'' (1965, u.a. mit [[James Noah]], [[Barry Atwater]] und Joseph Mell), ''12 O'Clock High'' (1965/1966, u.a. mit [[Robert Lansing]], [[Robert Brown]], Gary Lockwood und [[Jerry Ayres]]), ''FBI'' (1965/1968/1971, u.a. mit Stephen Brooks, [[Barbara Baldavin]], [[Susan Oliver]], Barry Russo, [[Patricia Smith]], Paul Comi, [[Bill Zuckert]] und [[William Windom]]), ''Auf der Flucht'' (1966, u.a. mit [[Garrison True]]), ''Batman'' (1967, u.a. mit [[Grace Lee Whitney]], [[Lloyd Haynes]] und Chuck Hicks), ''Planet der Giganten'' (1969, u.a. mit [[Don Marshall]]), ''Mannix'' (1969, u.a. mit [[Barbara Babcock]], [[Barbara Bosson]], [[Laurel Goodwin]], [[Logan Ramsey]] und [[Tom Troupe]]), ''[[Kobra, übernehmen Sie]]'' (1969/1970, u.a. mit [[Jack Donner]], Bruce Mars, [[Leonard Nimoy]], Torin Thatcher, [[Erik Holland]], [[William Wintersole]], [[Vic Perrin]], Malachi Throne und Logan Ramsey), ''The Name of the Game'' (1970, u.a. mit [[Irene Tsu]], [[Whit Bissell]] und [[Budd Albright]]), ''Fantasy Island'' (1983, u.a. mit Ian Abercrombie und [[Ricardo Montalban]]), ''Mord ist ihr Hobby'' (1985/1993/1995, u.a. mit [[Laurence Luckinbill]], William Windom, [[Albie Selznick]], [[Eric Pierpoint]], [[James Read]] und [[Jeri Ryan]]) und ''Desperate Housewives'' (2012, u.a. mit [[Teri Hatcher]] und [[Brenda Strong]]).