- Cheyenne Jackson - Billy Leatherwood
- Mike O'Malley - Tracy Schnelker
- David Koechner - Adoption Attorney
- Boyd Holbrook - Cary James
- Debbie Reynolds - Frances
- Eric Zuckerman - Lou
- Eddie Jemison - Assistant Director
- Randy Lowell - Director
- Tom Roach - Stunt Actor
- Jane Morris - Rose Carracappa
- Garrett M. Brown - Joe Carracappa
- Pat Asanti - George Liberace
- Casey Kramer - Dora Liberace
- James Kulick - Assistant Stage Manager
- Paul Witten - Make-up Artist
- Deborah Lacey - Gladys
- Austin Stowell - Backstage Flirt
- Francisco San Martin - Backstage Flirt
- Anthony Crivello - Stagehand
- Kiff VandenHeuvel - Scott's Half-Brother, Wayne
- Nikea Gamby-Turner - Dorothy
- Charlotte Crossley - June
- Josh Meyers - Liberace's Attorney
- Harvey J. Alperin - Joel Strote
- Jerry Clarke - Dr. Ronald Daniels
- Lisa Frantz - Anchorwoman
- Shaun T. Benjamin - Health Department Spokesman
- Kelly Allen - Young American Dancer (uncredited)
- Brian Blu - Guy Outside Casino (uncredited)
- Paul Borst - Party Guest (uncredited)
- Barbara Brownell - Angie Liberace (uncredited)
- Lee Christian - Sex Club Patron (uncredited)
- Kass Connors - Kazarian (uncredited)
- Timothy Skyler Dunigan - Concert Fan (uncredited)
- Fielding Edlow - Deposition Reporter (uncredited)
- Corey Eid - French Guy #2 (uncredited)
- Krystal Ellsworth - Impossible Dream Dancer (uncredited)
- Kelli Erdmann - Young American Dancer (uncredited)
- Amber Lee Ettinger - Hair Stylist (uncredited)
- Derek Ferguson - Young American (uncredited)
- Joe Filippone - Adult Bookstore Patron (uncredited)
- Brandon Henschel - Dancer (uncredited)
- Lenny Jacobson - Stage Manager (uncredited)
- Richard Allan Jones - Mourner (uncredited)
- Dominique Kelley - Impossible Dream Dancer (uncredited)
- David Dustin Kenyon - Cameraman (uncredited)
- Kirk Krogstad - Theatre Stage Hand (uncredited)
- Kristin Lindquist - Billy (uncredited)
- Rachael Markarian - Showgirl (uncredited)
- Hugo Pierre Martin - Patron (uncredited)
- KC Monnie - Young American Dancer (uncredited)
- Gregory Niebel - Tailor (uncredited)
- Cassidy Noblett - Show Boy (uncredited)
- Ryan Novak - Dancer (uncredited)
- Meredith Ostrowsky - Young American (uncredited)
- Brittany Perry-Russell - Liberace Showgirl (uncredited)
- Ferly Prado - Dancer (uncredited)
- Mike Jerome Putnam - On-Air News Reporter (uncredited)
- Thure Riefenstein - Maitre d' (uncredited)
- Stephanie Maura Sanchez - Second Anchorwoman (uncredited)
- Jimmy Scanlon - News Reporter (uncredited)
- Roby Schinasi - French Guy #1 (uncredited)
- Nellie Sciutto - Reporter (uncredited)
- Franklin J. Sterns - Bookstore Patron (uncredited)
- C.J. Stussi - Startz Surgeon (uncredited)
- Becca Sweitzer - Showgirl (uncredited)
- Trace Taylor - Stagehand (uncredited)
- Anna Wendt - Stagehand (uncredited)
- Ryken Zane - Print Reporter (uncredited)
- Judy Bruno Bennett - Nightclub Patron (uncredited)
- Cal Rein - Bookstore Guy (uncredited)
- Brian Neil Hoff - Reporter (uncredited)
- Nick Lanzisera - Young American Dancer (uncredited)
- Charles Moniz - Mourner (uncredited)
- Ayesha Orange - Showgirl (uncredited)
- Jason Williams - Young American Dancer (uncredited)
- Johnny Carson - Self (archive footage) (uncredited)
- Peggy King - Self (archive footage) (uncredited)
- Steven Soderbergh
- Gregory Jacobs
- Annie Welles
- Richard LaGravenese
- Jerry Weintraub
- Julie M. Anderson
- Carmen Cuba
- Susan Ekins
- Gregory Jacobs
- Caleb Duffy
- Marvin Hamlisch
- Larry Blake
- Larry Blake
Michael Douglas interpreta a Liberace en la película.
Matt Damon interpreta a Scott Thorson en la película.
Dan Aykroyd interpreta a Seymour Heller en la película.
Scott Bakula interpreta a Bob Black en la película.
Rob Lowe interpreta a Dr. Jack Startz en la película.
Tom Papa interpreta a Ray Arnett en la película.
Paul Reiser hace el papel de Mr. Felder.
Bruce Ramsay hace el papel de Carlucci.
Nicky Katt hace el papel de Mr. Y.
Cheyenne Jackson interpreta a Billy Leatherwood en la película.
Mike O'Malley hace el papel de Tracy Schnelker.
David Koechner interpreta a Adoption Attorney en la película.
Boyd Holbrook interpreta a Cary James en la película.
Debbie Reynolds hace el papel de Frances.
Eric Zuckerman interpreta a Lou en la película.
Eddie Jemison interpreta a Assistant Director en la película.
Randy Lowell interpreta a Director en la película.
Tom Roach hace el papel de Stunt Actor.
Jane Morris interpreta a Rose Carracappa en la película.
Garrett M. Brown hace el papel de Joe Carracappa.
Pat Asanti interpreta a George Liberace en la película.
Casey Kramer hace el papel de Dora Liberace.
James Kulick interpreta a Assistant Stage Manager en la película.
Paul Witten interpreta a Make-up Artist en la película.
Deborah Lacey interpreta a Gladys en la película.
Austin Stowell hace el papel de Backstage Flirt.
Francisco San Martin hace el papel de Backstage Flirt.
Anthony Crivello interpreta a Stagehand en la película.
Kiff VandenHeuvel interpreta a Scott's Half-Brother, Wayne en la película.
Nikea Gamby-Turner interpreta a Dorothy en la película.
Charlotte Crossley interpreta a June en la película.
Josh Meyers hace el papel de Liberace's Attorney.
Harvey J. Alperin interpreta a Joel Strote en la película.
Jerry Clarke interpreta a Dr. Ronald Daniels en la película.
Lisa Frantz interpreta a Anchorwoman en la película.
Shaun T. Benjamin hace el papel de Health Department Spokesman.
Kelly Allen interpreta a Young American Dancer (uncredited) en la película.
Brian Blu interpreta a Guy Outside Casino (uncredited) en la película.
Paul Borst interpreta a Party Guest (uncredited) en la película.
Barbara Brownell hace el papel de Angie Liberace (uncredited).
Lee Christian hace el papel de Sex Club Patron (uncredited).
Kass Connors interpreta a Kazarian (uncredited) en la película.
Timothy Skyler Dunigan hace el papel de Concert Fan (uncredited).
Fielding Edlow interpreta a Deposition Reporter (uncredited) en la película.
Corey Eid hace el papel de French Guy #2 (uncredited).
Krystal Ellsworth interpreta a Impossible Dream Dancer (uncredited) en la película.
Kelli Erdmann interpreta a Young American Dancer (uncredited) en la película.
Amber Lee Ettinger hace el papel de Hair Stylist (uncredited).
Derek Ferguson interpreta a Young American (uncredited) en la película.
Joe Filippone interpreta a Adult Bookstore Patron (uncredited) en la película.
Brandon Henschel hace el papel de Dancer (uncredited).
Lenny Jacobson hace el papel de Stage Manager (uncredited).
Richard Allan Jones hace el papel de Mourner (uncredited).
Dominique Kelley interpreta a Impossible Dream Dancer (uncredited) en la película.
David Dustin Kenyon interpreta a Cameraman (uncredited) en la película.
Kirk Krogstad interpreta a Theatre Stage Hand (uncredited) en la película.
Kristin Lindquist hace el papel de Billy (uncredited).
Rachael Markarian interpreta a Showgirl (uncredited) en la película.
Hugo Pierre Martin interpreta a Patron (uncredited) en la película.
KC Monnie interpreta a Young American Dancer (uncredited) en la película.
Gregory Niebel hace el papel de Tailor (uncredited).
Cassidy Noblett hace el papel de Show Boy (uncredited).
Ryan Novak interpreta a Dancer (uncredited) en la película.
Meredith Ostrowsky interpreta a Young American (uncredited) en la película.
Brittany Perry-Russell interpreta a Liberace Showgirl (uncredited) en la película.
Ferly Prado hace el papel de Dancer (uncredited).
Mike Jerome Putnam interpreta a On-Air News Reporter (uncredited) en la película.
Thure Riefenstein interpreta a Maitre d' (uncredited) en la película.
Stephanie Maura Sanchez interpreta a Second Anchorwoman (uncredited) en la película.
Jimmy Scanlon interpreta a News Reporter (uncredited) en la película.
Roby Schinasi hace el papel de French Guy #1 (uncredited).
Nellie Sciutto interpreta a Reporter (uncredited) en la película.
Franklin J. Sterns hace el papel de Bookstore Patron (uncredited).
C.J. Stussi hace el papel de Startz Surgeon (uncredited).
Becca Sweitzer interpreta a Showgirl (uncredited) en la película.
Trace Taylor interpreta a Stagehand (uncredited) en la película.
Anna Wendt interpreta a Stagehand (uncredited) en la película.
Ryken Zane interpreta a Print Reporter (uncredited) en la película.
Judy Bruno Bennett interpreta a Nightclub Patron (uncredited) en la película.
Cal Rein interpreta a Bookstore Guy (uncredited) en la película.
Brian Neil Hoff interpreta a Reporter (uncredited) en la película.
Nick Lanzisera interpreta a Young American Dancer (uncredited) en la película.
Charles Moniz interpreta a Mourner (uncredited) en la película.
Ayesha Orange hace el papel de Showgirl (uncredited).
Jason Williams interpreta a Young American Dancer (uncredited) en la película.
Johnny Carson interpreta a Self (archive footage) (uncredited) en la película.
Peggy King interpreta a Self (archive footage) (uncredited) en la película.
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