Filmography63 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2026 | Space: 1999 4K Double Bill - Breakaway and The MetamorphMovie | Dr. Helena Russell | 95 |
| 2026 | The Sixty Year Mission: How Star Trek Changed Television and the WorldMovie | Self | 95 |
| 2025 | Prisoners in SpaceMovie | Dr. Helena Russell | 94 |
| 2025 | Space: 1999 - 50 Years Out of OrbitMovie | Self | 94 |
| 2020 | On the RocksMovie | Gran | 89 |
| 2018 | The MatchmakerMovie | Sarah | 87 |
| 2010 | Nothing SpecialMovie | Catherine | 79 |
| 2010 | The Return of Victor BergmanMovie | Doctor Helena Russell (archive footage) | 79 |
| 2009 | Forget Me NotMovie | Sister Dolores | 78 |
| 2008 | Ben 10: Alien ForceSeries | Verdona (voice) | 77 |
| 2006 | Dangerous IsolationMovie | Elizabeth Kramer | 75 |
| 2001 | Smash Cuts! Super Sci-Fi Shorts FestMovie | Officer Ginlond (segment "Airtime") | 70 |
| 2000 | CSI: Crime Scene InvestigationSeries | Mrs. Iris Paul | 69 |
| 2000 | Strong MedicineSeries | Mrs. March | 69 |
| 2000 | PanicMovie | Deidre | 69 |
| 1998 | GideonMovie | Sarah | 67 |
| 1997 | The VisitorSeries | Constance MacArthur | 66 |
| 1996 | MillenniumSeries | Lilly Unser | 65 |
| 1993 | Diagnosis: MurderSeries | Cinnamon Carter | 62 |
| 1993 | Walker, Texas RangerSeries | Mother Superior | 62 |
| 1990 | The Spirit of '76Movie | Hipster | 59 |
| 1989 | Trust MeMovie | Mary Casal | 58 |
| 1987 | CBS Summer PlayhouseSeries | Julie Barrington | 56 |
| 1985 | MoonlightingSeries | Emily Greydon | 54 |
| 1984 | Murder, She WroteSeries | Nora Morgan | 53 |
| 1984 | Murder, She WroteSeries | Ellen Lombard | 53 |
| 1983 | Scarecrow and Mrs. KingSeries | — | 52 |
| 1982 | Cosmic PrincessMovie | Doctor Helena Russell | 51 |
| 1981 | The Harlem Globetrotters on Gilligan's IslandMovie | Dr. Olga Schmetner | 50 |
| 1980 | Alien AttackMovie | Doctor Helena Russell | 49 |
| 1978 | Destination Moonbase-AlphaMovie | Doctor Helena Russell | 47 |
| 1975 | Space: 1999Series | Helena Russell | 44 |
| 1975 | Space: 1999Movie | Helena Russell | 44 |
| 1973 | Savage!Movie | Gail Abbott | 42 |
| 1973 | A Summer Without BoysMovie | Ellen Hailey | 42 |
| 1972 | Goodnight, My LoveMovie | Susan Lakely | 41 |
| 1971 | The Pet SetSeries | Self | 40 |
| 1971 | Murder Once RemovedMovie | Lisa Manning | 40 |
| 1969 | Mission: Impossible - The BunkerMovie | Cinnamon Carter | 38 |
| 1969 | The Mama Cass Television ProgramMovie | Self | 38 |
| 1968 | Rowan & Martin's Laugh-InSeries | Self (uncredited) | 37 |
| 1967 | The Carol Burnett ShowSeries | Self | 36 |
| 1967 | Mission: Impossible - The SlaveMovie | Cinnamon Carter | 36 |
| 1966 | Mission: ImpossibleSeries | Cinnamon Carter | 35 |
| 1966 | Mission: Impossible - Old Man OutMovie | Cinnamon Carter | 35 |
| 1965 | Get SmartSeries | Alma | 34 |
| 1965 | My Mother the CarSeries | — | 34 |
| 1963 | The Greatest Show on EarthSeries | — | 32 |
| 1961 | The Dick Van Dyke ShowSeries | Dorothy | 30 |
| 1961 | Ben CaseySeries | — | 30 |
| 1961 | The Mike Douglas ShowSeries | Self | 30 |
| 1961 | StraightawaySeries | — | 30 |
| 1959 | Hawaiian EyeSeries | — | 28 |
| 1959 | Mr. LuckySeries | Prudence | 28 |
| 1959 | The Many Loves of Dobie GillisSeries | Veronica Vanderheit | 28 |
| 1959 | Adventures in ParadiseSeries | (uncredited) | 28 |
| 1959 | TightropeSeries | Sandra | 28 |
| 1958 | 77 Sunset StripSeries | Rachel Dent | 27 |
| 1957 | Wagon TrainSeries | Lucy Garrison | 26 |
| 1957 | Perry MasonSeries | Elayna Scott | 26 |
| 1956 | State TrooperSeries | Nen Slausen | 25 |
| 1954 | Summer PlayhouseSeries | — | 23 |
| 1951 | The Red Skelton ShowSeries | Self / Miss Mallory - Newspaperwoman | 20 |