Viggo Mortensen (Aragorn)

28 Days (2000)
Walk on the Moon, A (1999) UK
Psycho (1998) UK
Thin Red Line, The (1998) UK
Perfect Murder, A (1998) UK
Albino Alligator (1996)
Portrait of a Lady, The (1996) UK
Ruby Cairo (1993)
Young Guns II (1990)
Witness (1985)

Liv Tyler (Arwen)

Cookie’s Fortune (1999) UK
Plunkett & Macleane (1999)
Can’t Hardly Wait (1998)
Heavy (1995) UK
Silent Fall (1994)

Ian Holm (Bilbo)

eXistenZ (1999)
Alice Through the Looking Glass (1999) (TV) UK
Sweet Hereafter, The (1997) UK
Fifth Element, The (1997) UK
King Lear (1997) (TV) UK
Night Falls on Manhattan (1997)
Blue Ice (1992) UK
Henry V (1989)
Return of the Soldier, The (1982)
All Quiet on the Western Front (1979) (TV) UK
Alien (1979)
S.O.S. Titanic (1979) (TV)
Shout at the Devil (1976)
Severed Head, A (1971) UK
Fixer, The (1968) UK

Sean Bean (Boromir)

How to Get Ahead in Advertising (1989) UK
Stormy Monday (1988)

Marton Csokas (Celeborn)

Broken English (1996)

John Noble (Denethor)

Nostradamus Kid, The (1993) UK

Hugo Weaving (Elrond)

Strange Planet (1999)
Matrix, The (1999) UK
Bedrooms and Hallways (1998)
Babe (1995) UK
Exile (1994) UK
Adventures of Priscilla, Queen of the Desert, The (1994)
For Love Alone (1986)

Karl Urban (Eomer)

Heaven (1998)

Miranda Otto (Eowyn)

What Lies Beneath (2000)
Jack Bull, The (1999) (TV) UK
Thin Red Line, The (1998) UK
Nostradamus Kid, The (1993) UK

David Wenham (Faramir)

Molokai: The Story of Father Damien (1999)

Elijah Wood (Frodo)

Faculty, The (1998) UK
Good Son, The (1993)
Forever Young (1992) UK
Internal Affairs (1990)
Back to the Future Part II (1989) UK

Cate Blanchett (Galadriel)

Ideal Husband, An (1999) UK
Pushing Tin (1999) UK

Ian McKellen (Gandalf)

Apt Pupil (1998) UK
To Die for (1994) UK
Shadow, The (1994) UK
Keep, The (1983) UK
Alfred the Great (1969) UK

John Rhys-Davies (Gimli)

Sinbad: Beyond the Veil of Mists (2000)
Secret of the Andes (1998) UK
Bloodsport 3 (1996)
Unnamable II: The Statement of Randolph Carter, The (1993)
Perry Mason: The Case of the Fatal Framing (1992) (TV)
Perry Mason: The Case of the Murdered Madam (1987) (TV)
King Solomon’s Mines (1985)
Naked Civil Servant, The (1975)

Andy Serkis (Gollum)

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

Stephen Ure (Gorbag) *rumored*

Broken English (1996)

Craig Parker (Haldir)

Tommyknockers, The (1993) (TV) UK

Harry Sinclair (Isildur)

Heavenly Creatures (1994)
Braindead (1992) UK

Orlando Bloom (Legolas)

Wilde (1997)

Dominic Monaghan (Merry)

Hostile Waters (1997) (TV)

Bruce Spence (Mouth of Sauron)

Sweet Talker (1991)
Mad Max Beyond Thunderdome (1985)
Mad Max 2: The Road Warrior (1981)

Sean Astin (Sam)

Kimberly (1999)
Deterrence (1999)
Icebreaker (1999)
Bulworth (1998) UK
Dish Dogs (1998)
Low Life, The (1994/I)
Encino Man (1992) UK
Where the Day Takes You (1992) UK
Toy Soldiers (1991)
Memphis Belle (1990)
War of the Roses, The (1989)
Staying Together (1989)
White Water Summer (1987) UK
Goonies, The (1985)

Christopher Lee (Saruman)

Jinnah (1998) UK
Tale of the Mummy (1998) UK
Gremlins 2: The New Batch (1990)
Safari 3000 (1982)
Massarati and the Brain (1982) (TV)
1941 (1979) UK
Return from Witch Mountain (1978) UK
Nothing But the Night (1972)
One More Time (1970)
Scream and Scream Again (1969)
Brides of Fu Manchu, The (1966) UK
She (1965/I) UK
Face of Fu Manchu, The (1965) UK
City of the Dead, The (1960)

Bian Sergent (Ted Sandyman)

Braindead (1992)

Bernard Hill (Theoden)

Midsummer Night’s Dream, A (1999) UK
Loss of Sexual Innocence, The (1999)
True Crime (1999) UK
Bounty, The (1984)
Gandhi (1982) UK

Brad Dourif (Wormtongue)

Ghost, The (2000)
Senseless (1998) UK
Urban Legend (1998) UK
Phoenix (1995)
Death Machine (1995)
Murder in the First (1995)
Escape from Terror: The Teresa Stamper Story (1994) (TV)
Body Parts (1991)
Hidden Agenda (1990)
Child’s Play 2 (1990)
Mississippi Burning (1988)
Child’s Play (1988)

Jim Rygiel (SFX)

102 Dalmatians (2000)
Anna and the King (1999) UK
Star Trek: Insurrection (1998) UK
Starship Troopers (1997)
Last of the Mohicans, The (1992)
Alien³ (1992) UK
Batman Returns (1992) UK

Howard Shore (Composer)

Cell, The (2000)
Dogma (1999)
Analyze This (1999) UK
eXistenZ (1999)
Crash (1996) UK
Se7en (1995)
Ed Wood (1994)
Sliver (1993) UK
Mrs. Doubtfire (1993)
Philadelphia (1993) UK
Prelude to a Kiss (1992)
Silence of the Lambs, The (1991)
Postcards from the Edge (1990)
Dead Ringers (1988) UK
Fire with Fire (1986) UK
Places in the Heart (1984) UK
Videodrome (1983) UK
Silkwood (1983) UK
Scanners (1981)

Peter Jackson (Director)

Heavenly Creatures (1994)
Braindead (1992) UK

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

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