I have it narrowed down to 51 for you.
1. Eating Dust (2008) (pre-production) .... Linda
2. Life Line (2007) (TV) .... Katy Adair
3. Flood (2007)
4. Played (2006) .... Maggie
5. "Justice League" .... Emerald Empress (1 episode, 2006)
... aka JL (USA: promotional abbreviation)
... aka Justice League Unlimited (USA: long title)
- Far from Home (2006) TV Episode .... Emerald Empress
6. Child of Mine (2005) (TV) .... Tess Palmer
7. "The Virgin Queen" (2005) (mini) TV Series .... Queen Mary
8. The Californians (2005) .... Luna
9. "Criminal Minds" .... Karen Donovan (1 episode, 2005)
- Extreme Aggressor (2005) TV Episode .... Karen Donovan
10. 40 (2003) (TV) .... Jess
11. Before You Go (2002) .... Mary
12. Virginia's Run (2002) .... Jessie Eastwood
... aka Chevauchée de Virginie, La (Canada: French title)
13. Jackie Bouvier Kennedy Onassis (2000) (TV) .... Jackie Bouvier Kennedy Onassis
14. Breathtaking (2000) .... Caroline Henshow
15. The Guilty (2000) .... Natalie Crane
... aka Coupable ou non-coupable (Canada: French title: TV title)
16. Run the Wild Fields (2000) (TV) .... Ruby Miller
17. A Texas Funeral (1999) .... Miranda
18. The Man Who Knew Too Little (1997) .... Lorelei 'Lori'
... aka Agent Null Null Nix (Germany)
... aka Agent Null Null Nix - Bill Murray in hirnloser Mission (Germany: TV title)
19. "Scarlett" (1994) (mini) TV Series (as Joanne Whalley-Kilmer) .... Scarlett O'Hara
20. Trial by Jury (1994) (as Joanne Whalley-Kilmer) .... Valerie Alston
21. A Good Man in Africa (1994) (as Joanne Whalley-Kilmer) .... Celia Adekunle
22. Mother's Boys (1994) (as Joanne Whalley-Kilmer) .... Colleen 'Callie' Harland
23. The Secret Rapture (1993) (as Joanne Whalley-Kilmer) .... Katherine Coleridge
24. Storyville (1992) (as Joanne Whalley-Kilmer) .... Natalie Tate
25. Shattered (1991) (as Joanne Whalley-Kilmer) .... Jenny Scott
26. The Big Man (1990) (as Joanne Whalley-Kilmer) .... Beth Scoular
... aka Crossing the Line (USA)
27. Navy Seals (1990) (as Joanne Whalley-Kilmer) .... Claire Varrens
28. Kill Me Again (1989) (as Joanne Whalley-Kilmer) .... Fay Forrester
29. Scandal (1989) (as Joanne Whalley-Kilmer) .... Christine Keeler
30. "A TV Dante" (1989) (mini) TV Series (as Joanne Whalley-Kilmer) .... Beatrice
... aka A TV Dante: The Inferno - Cantos I-VIII (UK: video box title)
... aka Dante: The Inferno (UK: video title)
31. To Kill a Priest (1988) .... Anna
... aka Complot, Le (France)
... aka Popieluszko
32. Willow (1988) .... Sorsha
33. Will You Love Me Tomorrow (1987) (TV) .... Jackie
... aka Screen Two: Will You Love Me Tomorrow (UK: series title)
34. "The Singing Detective" (1986) (mini) TV Series .... Nurse Mills
35. The Good Father (1985) .... Mary Hall
36. "Hold the Back Page" (1985) (mini) TV Series
37. "Edge of Darkness" (1985) (mini) TV Series .... Emma Craven
38. No Surrender (1985) .... Cheryl
39. Dance with a Stranger (1985) .... Christine
40. A Christmas Carol (1984) (TV) .... Fan
41. "Reilly: The Ace of Spies" (1983) (mini) TV Series .... Ulla Glass
... aka Reilly: Ace of Spies (USA)
42. "Bergerac" .... Christine Bolton (1 episode, 1983)
- Always Leave Them Laughing (1983) TV Episode .... Christine Bolton
43. "The Gentle Touch" .... Dany (1 episode, 1982)
- Dany (1982) TV Episode .... Dany
44. Pink Floyd The Wall (1982) .... Groupie
... aka The Wall
45. "A Kind of Loving" (1982) TV Series .... Ingrid Rothwell
46. "Juliet Bravo" .... Maureen Maskell (1 episode, 1980)
- Shot Gun (1980) TV Episode .... Maureen Maskell
47. The One and Only Phyllis Dixey (1978) (TV) .... Doris
... aka Peek-A-Boo (UK)
48. "How We Used to Live" .... Marjorie Dawson / ... (4 episodes, 1976-1978)
- 1874: New Arrivals (1978) TV Episode .... Sarah Hughes
- On the Mains (1976) TV Episode .... Marjorie Dawson
- On Strike (1976) TV Episode .... Marjorie Dawson
- On the Air (1976) TV Episode .... Marjorie Dawson
49. "Emmerdale Farm" (1972) TV Series .... Angela Read (unknown episodes, 1977)
... aka Emmerdale (UK: new title)
50. "Coronation Street" .... Customer in Sylvia's Separates (1 episode, 1974-1976)
... aka Corrie (UK: informal title)
- Episode #1.1622 (1976) TV Episode .... Customer in Sylvia's Separates
51. Joby (1975) (TV) .... Molly McLeod