Filmography59 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2013 | Halloween 6: Producer's CutMovie | Debra Strode | 66 |
| 2012 | PerceptionSeries | Stacia Clairborne | 65 |
| 2007 | Cold OnesMovie | Barb | 60 |
| 2002 | For the PeopleSeries | Janine Woods | 55 |
| 2001 | Mockingbird Don't SingMovie | Louise Standon | 54 |
| 2000 | NewsbreakMovie | Frances Johnson | 53 |
| 1999 | Hollywood Screen Tests: Take 1Movie | Self (archive footage) (uncredited) | 52 |
| 1996 | ProfilerSeries | Ilene Klinger | 49 |
| 1995 | Halloween: The Curse of Michael MyersMovie | Debra Strode | 48 |
| 1993 | The X-FilesSeries | Kathy Lee Tencate | 46 |
| 1989 | Deadly EmbraceMovie | — | 42 |
| 1987 | Teen Wolf TooMovie | Professor Brooks | 40 |
| 1985 | Better Off Dead...Movie | Jenny Meyer | 38 |
| 1985 | First StepsMovie | Sherry Petrofsky | 38 |
| 1985 | EmbassyMovie | Sue Davidson | 38 |
| 1984 | Murder, She WroteSeries | Joan Kemp | 37 |
| 1984 | Murder, She WroteSeries | Laurie Bascomb | 37 |
| 1984 | Crazy like a FoxSeries | Jenny Fenwick | 37 |
| 1984 | E/RSeries | — | 37 |
| 1983 | Scarecrow and Mrs. KingSeries | — | 36 |
| 1983 | Summer GirlMovie | Mary Shelburne | 36 |
| 1983 | Close TiesMovie | Evelyn | 36 |
| 1982 | HotelSeries | — | 35 |
| 1979 | The Facts of LifeSeries | — | 32 |
| 1979 | Trapper John, M.D.Series | — | 32 |
| 1979 | The Last ConvertibleSeries | Ann Rowan | 32 |
| 1979 | Flatbed Annie & Sweetie Pie: Lady TruckersMovie | Ginny "Sweetie Pie" LaRosa | 32 |
| 1978 | The One and OnlyMovie | Mary Crawford | 31 |
| 1977 | The Love BoatSeries | Wendy | 30 |
| 1976 | Rich Man, Poor ManSeries | Virginia Calderwood | 29 |
| 1975 | BarettaSeries | — | 28 |
| 1975 | ArcherSeries | — | 28 |
| 1974 | This Is the West That WasMovie | Calamity Jane | 27 |
| 1974 | The Story of Pretty Boy FloydMovie | Ruby Hardgrave | 27 |
| 1973 | ThrillerSeries | Helen | 26 |
| 1973 | Police StorySeries | — | 26 |
| 1973 | Don't Be Afraid of the DarkMovie | Sally Farnham | 26 |
| 1972 | Ghost StorySeries | Cindy | 25 |
| 1972 | Cool MillionSeries | Annette Borne | 25 |
| 1972 | The Streets of San FranciscoMovie | Holly Jean Berry | 25 |
| 1972 | The PeopleMovie | Melodye Amerson | 25 |
| 1970 | NorwoodMovie | Rita Lee Chipman | 23 |
| 1969 | True GritMovie | Mattie Ross | 22 |
| 1967 | Judd, for the DefenseSeries | — | 20 |
| 1967 | IronsideSeries | — | 20 |
| 1967 | IronsideMovie | Ellen Wells | 20 |
| 1966 | Star TrekSeries | Miri | 19 |
| 1965 | Run for Your LifeSeries | Tina | 18 |
| 1965 | Bus Riley's Back in TownMovie | Gertrude "Gussie" Riley | 18 |
| 1965 | The Restless OnesMovie | April Harris | 18 |
| 1964 | The Man from U.N.C.L.E.Series | Sandy True | 17 |
| 1963 | The FugitiveSeries | Sharon Wolfe | 16 |
| 1963 | Mr. NovakSeries | Julie Dean | 16 |
| 1963 | The FugitiveSeries | Ruth Simmons | 16 |
| 1961 | Ben CaseySeries | — | 14 |
| 1961 | Dr. KildareSeries | Sandy Kimball | 14 |
| 1959 | BonanzaSeries | Trudy Loughlin | 12 |
| 1958 | The Donna Reed ShowSeries | — | 11 |
| 1955 | GunsmokeSeries | Angel | 8 |