Filmography
| Year | Title | Role | Notes |
|---|---|---|---|
| 1982 | ABC Afterschool Special | Amy Watson | Episode “Amy & the Angel” |
| 1984 | Supergirl | Kara Zor-El / Linda Lee / Supergirl | |
| 1985 | The Legend of Billie Jean | Billie Jean Davy | |
| 1986 | Ruthless People | Sandy Kessler | |
| 1987 | The Secret of My Success | Christy Wills | |
| 1988 | Sticky Fingers | Hattie | |
| Improv Tonite | Herself | Guest host | |
| 1989 | Happy Together | Alexandra Page | |
| 1990 | The Great Air Race | Jacqui Cochrane | TV movie |
| Capital News | Anne McKenna | TV movie | |
| Capital News | Anne McKenna | 13 episodes | |
| 1991 | City Slickers | Bonnie Rayburn | |
| The Hidden Room | Lauren | Episode: “Wasting Away” | |
| 1992 | Seinfeld | Becky Gelke | Episode: “The Good Samaritan” |
| Dream On | Sarah | Episode: "Theory of Relativity" | |
| Betrayal of the Dove | Ellie West | ||
| 1992–1994 | The Adventures of Batman & Robin | Talia al Ghul (voice role) | 4 episodes |
| 1993 | 12:01 | Lisa Fredericks | TV movie |
| Chantilly Lace | Hannah | TV movie | |
| A House In The Hills | Alex Weaver | ||
| 1994 | Couples | Nina | TV movie |
| Lassie | Laura Turner | ||
| Parallel Lives | Elsa Freedman | TV movie | |
| 1995 | The Steal | Kim | |
| No Way Back | Mary | ||
| 1997 | The Long Way Home | Herself | Voice role |
| Caroline in the City | Cassandra Thompson | Caroline and the Monkeys | |
| Toothless | Katherine's Mom | TV movie | |
| 1997–1998 | Michael Hayes | Julie Siegel | 3 episodes |
| 1998 | Best Friends for Life | Pammy Cahill | TV movie |
| 2000 | American Adventure | Kathy | TV movie |
| 2001 | Nowhere in Sight | Carly Bauers | |
| Will & Grace | Peggy Truman | Episode: “Moveable Feast” | |
| 2003 | Boston Public | Mrs. McNeal | Episode: "Chapter Seventy-Four" |
| 2004 | Law & Order: Special Victims Unit | Susan Coyle | Episode: “Families” |
| Seeing Other People | Penelope | ||
| 2005 | Grey's Anatomy | Nadia Shelton | Episode: "Grandma Got Run Over by a Reindeer" |
| 2006 | Jane Doe: The Harder They Fall | Stella Andre | TV movie |
| The New Adventures of Old Christine | Liz | Episode: “Teach Your Children Well” | |
| 2007 | Crossing Jordan | Elaine Tallridge | Episode: “Seven Feet Under” |
| 2007–2010 | Smallville | Lara-El | 3 episodes |
| 2009 | Supernatural | Susan Carter | Episode: “Family Remains” |
| Eleventh Hour | Susan Wynne | Episode: “Medea” | |
| Greek | Dr. Magda Stephanopoulos | Episode: “Guilty Treasures” | |
| 2010 | Rock the House | Diane Petersen | TV movie |
| CSI: NY | Elizabeth Harris | Episode: “Do Not Pass Go” | |
| 2010–2011 | Gigantic | Jennifer Brooks | 10 episodes |
| 2011 | Private Practice | Erin | Episode: “Two Steps Back” |
| Rock the House | Diane Petersen | TV movie | |
| Drop Dead Diva | Penny Brecker | Episode: “Hit and Run” | |
| 2011–present | The Lying Game | Kristin Mercer | Series regular |
Read more about this topic: Helen Slater