威廉·梅西参与的电影：
《浪漫的老鼠 The Tale of Despereaux 》 (2008) ...Lester (voice)
《交易 The Deal 》 (2008) ...Charlie Berns
《交易 The Deal 》 (2008) ...screenplay
《 Hurricane Mary 》 (2008) ...Dr. Rocchio
《幻影 The Grand 》 (2007) ...
《惊骑之旅/荒野大飚客 Wild Hogs 》 (2007) ...Dudley Frank
《曾经安静的男人 He Was a Quiet Man 》 (2007) ...Gene Shelby
《 Keep Coming Back 》 (2007) ...
《小狗多戈尔 Doogal 》 (2006) ...Brian (voice)
《鲍比 Bobby 》 (2006) ...Paul
《棒球小英雄 Everyone's Hero 》 (2006) ...Lefty Maginnis (voice)
《内陆帝国 Inland Empire 》 (2006) ...Announcer
《影片未分级 This Film Is Not Yet Rated 》 (2006) ...Bernie Lootz (archive footage)
《 Celebrity Debut 》 (2006) ...Himself (archive footage)
《第78届奥斯卡颁奖典礼 The 78th Annual Academy Awards 》 (2006) ...Himself
《 "Curious George" 》 (2006) ...Narrator (1 episode, 2006)
《 12th Annual Screen Actors Guild Awards 》 (2006) ...Himself
《 A Hole in the Earth 》 (2006) ...Henry
《 The 63rd Annual Golden Globe Awards 》 (2006) ...Himself
《 A Hole in the Earth 》 (2006) ...producer
《好莱坞百年百部经典电影：励志篇 AFI's 100 Years... 100 Cheers: America's Most Inspiring Movies 》 (2006) ...Himself
《噩梦工厂 "Nightmares and Dreamscapes: From the Stories of Stephen King" 》 (2006) ...Clyde Umney/Sam Landry/George Demmick (episode: "Umney's Last Case")
《神奇的旋转木马 The Magic Roundabout 》 (2005) ...Brian (voice: English version)
《窈窕老爸/穿越美国 Transamerica 》 (2005) ...executive producer
《感谢你抽烟 Thank You for Smoking 》 (2005) ...Senator Ortolan K. Finistirre
《撒哈拉 Sahara 》 (2005) ...Admiral Jim Sandecker
《 The 62nd Annual Golden Globe Awards 》 (2005) ...Himself - Nominee: Best Actor in a Mini-Series or Made for TV Movie
《埃德蒙德 Edmond 》 (2005) ...Edmond Burke
《 The 10th Annual Critics' Choice Awards 》 (2005) ...Himself - presenter
《一线声机/绝地生机/驳命来电 Cellular 》 (2004) ...Mooney
《斯巴达人/惊天特攻 Spartan 》 (2004) ...Stoddard
《在敌之手/落入敌手/猎杀U-42海底大战 In Enemy Hands 》 (2004) ...U.S.S. Swordfish: Chief of Boat Nathan Travers
《最后时刻 Reversible Errors 》 (2004) ...Arthur Raven
《 Dialing Up 'Cellular' 》 (2004) ...Himself
《羊毛帽 The Wool Cap 》 (2004) ...(teleplay) &
《羊毛帽 The Wool Cap 》 (2004) ...Gigot
《厄运急转弯/冷却者//倒霉鬼 The Cooler 》 (2003) ...Bernie Lootz
《奔腾年代/奔腾岁月/壮志奔腾 Seabiscuit 》 (2003) ...Tick Tock McGlaughlin
《逍遥骑士和愤怒的公牛：性、毒品和摇滚一代如何拯救好莱坞 Easy Riders, Raging Bulls: How the Sex, Drugs and Rock 'N' Roll Generation Saved Hollywood 》 (2003) ...Narrator (voice)
《 "Out of Order" 》 (2003) ...Steven
《 The 2003 IFP Independent Spirit Awards 》 (2003) ...Himself
《 Dark Roots: The Unauthorized Anna Nicole 》 (2003) ...Narrator (voice)
《 Minnesota Nice 》 (2003) ...Himself
《 Stealing Sinatra 》 (2003) ...John Irwin
《 A Life of Laughter: Remembering John Ritter 》 (2003) ...Himself
《 Seabiscuit: The Making of a Legend 》 (2003) ...Himself
《 The True Story of Seabiscuit 》 (2003) ...Narrator/Host (voice)
《 The Making of 'Seabiscuit' 》 (2003) ...special thanks
《各显神通 Welcome to Collinwood 》 (2002) ...Riley
《布公仔圣诞奇遇 It's a Very Merry Muppet Christmas Movie 》 (2002) ...Glenn
《 Just a Walk in the Park 》 (2002) ...(teleplay) &
《推销员 Door to Door 》 (2002) ...Bill Porter
《推销员 Door to Door 》 (2002) ...(written by) &
《侏罗纪公园3 Jurassic Park III 》 (2001) ...Paul Kirby
《焦点 Focus 》 (2001) ...Lawrence 'Larry' Newman
《 The Making of 'Jurassic Park III' 》 (2001) ...Himself
《 The Special Effects of 'Jurassic Park III' 》 (2001) ...Himself
《 The Dinosaurs of 'Jurassic Park III' 》 (2001) ...Himself
《 Beyond Jurassic Park 》 (2001) ...Himself
《我为电影狂 State and Main 》 (2000) ...Walt Price
《杀手无罪 Panic 》 (2000) ...Alex
《 That Moment: Magnolia Diary 》 (2000) ...Himself
《 Spotlight on Location: Mystery Men 》 (2000) ...Himself
《木兰花 Magnolia 》 (1999) ...Quiz Kid Donnie Smith
《快乐德州 Happy, Texas 》 (1999) ...Sheriff Chappy Dent
《神秘人 Mystery Men 》 (1999) ...The Shoveller
《五星级谋杀案 A Slight Case of Murder 》 (1999) ...Terry Thorpe
《五星级谋杀案 A Slight Case of Murder 》 (1999) ...(teleplay) &
《 'Psycho' Path 》 (1999) ...Himself
《 The Night of the Headless Horseman 》 (1999) ...Ichabod Crane (voice)
《公民行动 Civil Action, A 》 (1998) ...James Gordon
《1999惊魂记 Psycho 》 (1998) ...Milton Arbogast
《欢乐谷 Pleasantville 》 (1998) ...George Parker
《 Secret of NIMH 2: Timmy to the Rescue, The 》 (1998) ...Justin (voice)
《师徒杀手闯江湖 Jerry and Tom 》 (1998) ...Karl
《桃色骗局 Con, The 》 (1998) ...Bobby Sommerdinger
《桃色骗局 Con, The 》 (1998) ...(written by) &
《作大英雄 Wag the Dog 》 (1997) ...CIA Agent Charles Young
《不羁夜 Boogie Nights 》 (1997) ...Little Bill
《空军一号 Air Force One 》 (1997) ...Major Caldwell
《密西西比谋杀案 Ghosts of Mississippi 》 (1996) ...Charlie Crisco, Bobby DeLaughter's Assistant
《冰血暴 Fargo 》 (1996) ...Jerry Lundegaard
《 Hit Me 》 (1996) ...Policeman
《土牢地狱的战役 Andersonville 》 (1996) ...Col. Chandler
《潜艇总动员 Down Periscope 》 (1996) ...Capt. Carl Knox (Orlando)
《霍兰先生的乐章 Mr. Holland's Opus 》 (1995) ...Vice Principal Gene Wolters
《神兵总动员 Tall Tale 》 (1995) ...Railroad Magnate (uncredited)
《绝对嫌疑 Above Suspicion 》 (1995) ...Pros. Atty. Schultz
《绝对嫌疑 Above Suspicion 》 (1995) ...(written by) &
《一级谋杀 Murder in the First 》 (1995) ...D.A. William McNeil
《同居大作战 Roommates 》 (1995) ...Doctor (uncredited)
《虚拟实境战斗者 Evolver 》 (1995) ...Evolver (voice)
《 Dead on Sight 》 (1994) ...Steven Meeker
《致命内幕 Client, The 》 (1994) ...Dr. Greenway
《仁心仁术 "ER" 》 (1994) ...Dr. David Morgenstern (1994-1998)
《 ER 》 (1994) ...Dr. David Morgenstern
《 Oleanna 》 (1994) ...John
《跨世奇人 Being Human 》 (1993) ...Boris
《二十美元 Twenty Bucks 》 (1993) ...Property Clerk
《 Heart of Justice, The 》 (1993) ...Booth
《邦尼和琼 Benny & Joon 》 (1993) ...Randy Burch
《王者之旅 Searching for Bobby Fischer 》 (1993) ...Tunafish Father
《 Water Engine, The 》 (1992) ...Charles Lang
《激情性谋杀 Murderous Affair: The Carolyn Warmus Story, A 》 (1992) ...Sean Hammel
《影与雾 Shadows and Fog 》 (1992) ...Cop with Spiro
《杀人拼图 Homicide 》 (1991) ...Tim Sullivan
《 Murder of Mary Phagan, The 》 (1988) ...Randy
《老千大阴谋 Things Change 》 (1988) ...Billy Drake
《那个时代 Radio Days 》 (1987) ...Radio Voice (voice)
《赌场 House of Games 》 (1987) ...Sgt. Moran
《龙拳小子 Last Dragon, The 》 (1985) ...J.J.
《神不知鬼不觉 Without a Trace 》 (1983) ...Reporter
《妙事连篇糗事多 Foolin' Around 》 (1980) ...Bronski
《时光倒流七十年 Somewhere in Time 》 (1980) ...Critic
《 "The Awakening Land" 》 (1978) ...Will Beagle (as W.H. Macy)