Here's a list of movies that LOTR cast members are currently or will soon be in (other than ROTK). :-)

Sean Astin	2004: Smile 2004: Slipstream 2004Caught in the Act 2004Marilyn Hotchkiss' Ballroom Dancing and Charm School 2004: Party Wagon 2005< HREF="http://www.imdb.com/title/tt0410751/">Thanks to Gravity 2004: Mark Twain's Greatest Adventure: It's A Matter of Time 2004: Once in A Lifetime: Just Go For It! 2005: +Hercules (TV)
Sean Bean	2004: National Treasure 2005: The Dark 2005: +Flight Plan
Cate Blanchett	2004: The Aviator 2004: Little Fish 2006: Golden Age
Orlando Bloom	2004: Haven 2005: Kingdom of Heaven 2005: Elizabethtown 2005: Pirates of the Caribbean 2
Billy Boyd	2004: Seed of Chucky 2005: On A Clear Day
Marton Csokas	2004: The Great Raid 2005: Kingdom of Heaven 2005: Aeon Flux
Brad Dourif	2004: Brew 2004: The Hazing 2004: Seed of Chucky
Bernard Hill	2004: Wimbledon
Ian Holm	2004: The Aviator 2004: Stranger With Candy
Christopher Lee	2004: The Corpse Bride 2005: The Last Unicorn 2004: May Day 2005: Charlie and the Chocolate Factory 2005: Star Wars: Episode III 2006: Glubina
Ian McKellen	2005: The Magic Roundabout Movie 2005: Never Was
Dominic Monaghan	2004: The Purifiers 2004: Shotting Livien
Viggo Mortensen	2005: Alatriste 2005: A History of Violence
Miranda Otto	2004: The Flight of the Phoenix 2004: Through My Eyes >
John Rhys-Davies	2004: Catching Kringle 2004: The Game of Their Lives 2004: The Shadow Dancer 2004: 12 Days of Terror (TV)
Andy Serkis	2005: King Kong
Liv Tyler	2004: Lonesome Jim
Karl Urban
Hugo Weaving	2004: Time Breaker 2005: Little Fish
David Wenham	2004: Three Dollars
Elijah Wood	2005: The Yank 2005: Sin City 2006: Happy Feet 2005: Everything is Illuminated