Viggo Mortensen (Aragorn)

28 Days (2000)
Walk on the Moon, A (1999)
Perfect Murder, A (1998) UK
Portrait of a Lady, The (1996)
Passion of Darkly Noon, The (1995)
American Yakuza (1994)
Boiling Point (1993)
Ruby Cairo (1993)
Young Americans, The (1993) UK
Two Small Bodies (1993)
Young Guns II (1990)
Leatherface: Texas Chainsaw Massacre III (1990) UK
Witness (1985)

Liv Tyler (Arwen)

Dr. T and the Women (2000)
Cookie’s Fortune (1999)
Plunkett & Macleane (1999) UK
Onegin (1999)
Empire Records (1995) UK

Ian Holm (Bilbo)

Bless the Child (2000)
Joe Gould’s Secret (2000)
Miracle Maker, The (2000) (TV)
Simon Magus (1999/I) UK
eXistenZ (1999)
Life Less Ordinary, A (1997) UK
Big Night (1996)
Henry V (1989)
Dance with a Stranger (1985)
Chariots of Fire (1981) UK
Time Bandits (1981)
Alien (1979) UK
S.O.S. Titanic (1979) (TV)
Shout at the Devil (1976)
Robin and Marian (1976) UK
Juggernaut (1974) UK
Mary, Queen of Scots (1971) UK
Nicholas and Alexandra (1971)
Fixer, The (1968) UK

Sean Bean (Boromir)

Airborne (1998)
When Saturday Comes (1996) UK
Shopping (1994) UK
Jacob: A TNT Bible Story (1994) (TV)
Stormy Monday (1988)

Hugo Weaving (Elrond)

Matrix, The (1999) UK

Karl Urban (Eomer)

Heaven (1998)

Miranda Otto (Eowyn)

What Lies Beneath (2000)
Jack Bull, The (1999) (TV) UK

David Wenham (Faramir)

Molokai: The Story of Father Damien (1999)

Elijah Wood (Frodo)

Deep Impact (1998)
Faculty, The (1998) UK
Forever Young (1992) UK
Avalon (1990) UK
Internal Affairs (1990) UK

Cate Blanchett (Galadriel)

Pushing Tin (1999)
Ideal Husband, An (1999) UK
Talented Mr. Ripley, The (1999) UK
Elizabeth (1998)
Paradise Road (1997)

Ian McKellen (Gandalf)

X-Men (2000)
Gods and Monsters (1998)
Apt Pupil (1998) UK
Shadow, The (1994)
I’ll Do Anything (1994)
Last Action Hero (1993) UK
Walter and June (1986) UK
Plenty (1985) UK
Alfred the Great (1969) UK
Touch of Love, A (1969) UK

Mark Ferguson (Gil Galad)

Every Woman’s Dream (1996) (TV)

John Rhys-Davies (Gimli)

Au Pair (1999) (TV) UK
Secret of the Andes (1998) UK
Cats Don’t Dance (1997)
Indiana Jones and the Last Crusade (1989)
Perry Mason: The Case of the Murdered Madam (1987) (TV)
Firewalker (1986) UK
King Solomon’s Mines (1985)
Nairobi Affair (1984) (TV) UK
Victor/Victoria (1982)

Andy Serkis (Gollum)

Topsy-Turvy (1999) UK
Among Giants (1998) UK
Mojo (1997) UK

Bruce Spence (Mouth of Sauron)

Sweet Talker (1991)
Mad Max 2: The Road Warrior (1981)

Sean Astin (Sam)

Kimberly (1999)
Icebreaker (1999)
Bulworth (1998) UK
Long Way Home, The (1997) UK
Safe Passage (1994)
Teresa’s Tattoo (1994)
Encino Man (1992) UK
Toy Soldiers (1991) UK
Staying Together (1989)
War of the Roses, The (1989)
White Water Summer (1987) UK
Goonies, The (1985)

Christopher Lee (Saruman)

Sleepy Hollow (1999) UK
Tale of the Mummy (1998) UK
Jinnah (1998) UK
Gremlins 2: The New Batch (1990)
Mio min Mio (1987) UK
Safari 3000 (1982)
Eye for an Eye, An (1981) UK
1941 (1979) UK
Return from Witch Mountain (1978) UK
Airport ’77 (1977)
Three Musketeers, The (1973) UK
Wicker Man, The (1973) UK
Horror Express (1972) UK
Scream and Scream Again (1969)
Curse of the Crimson Altar (1968)
Night of the Big Heat (1967)
Dracula: Prince of Darkness (1966)
Dr. Terror’s House of Horrors (1965)
Cockleshell Heroes, The (1955) UK
Crimson Pirate, The (1952)

Bernard Hill (Theoden)

Midsummer Night’s Dream, A (1999) UK
True Crime (1999) UK
Mountains of the Moon (1990)
Shirley Valentine (1989) UK
Gandhi (1982) UK

Brad Dourif (Wormtongue)

Bride of Chucky (1998) UK
Nightwatch (1998)
Urban Legend (1998) UK
Best Men (1997)
Death Machine (1995)
Amos & Andrew (1993)
Exorcist III, The (1990)
Hidden Agenda (1990)
Blue Velvet (1986)
Ragtime (1981)
Guyana Tragedy: The Story of Jim Jones (1980) (TV)

Jim Rygiel (SFX)

Anna and the King (1999)
Star Trek: Insurrection (1998) UK
Desperate Measures (1998)
Cliffhanger (1993) UK
Last Action Hero (1993) UK
Alien³ (1992) UK
Batman Returns (1992)
Last of the Mohicans, The (1992)
Solar Crisis (1990) UK
Ghost (1990)

Howard Shore (Composer)

Cell, The (2000)
Analyze This (1999) UK
eXistenZ (1999)
Game, The (1997) UK
Truth About Cats & Dogs, The (1996) UK
Crash (1996) UK
Se7en (1995)
Guilty as Sin (1993)
Prelude to a Kiss (1992) UK
Silence of the Lambs, The (1991)
Postcards from the Edge (1990)
Moving (1988)
Big (1988)
Places in the Heart (1984) UK

To get more information, use the sites I use like:

mydigiguide.com, tv-now.com and IMDB.com