Jack Nicholson President Dale / Art Land Glenn Close Marsha Dale Annette Bening Barbara Land Pierce Brosnan Donald Kessler Danny DeVito Rude Gambler Martin Short Jerry Ross Sarah Jessica Parker Nathalie Lake Michael J. Fox Jason Stone Rod Steiger General Decker Tom Jones Himself Lukas Haas Richie Norris Natalie Portman Taffy Dale Jim Brown Byron Williams Lisa Marie Martian Girl Sylvia Sidney Grandma Norris Paul Winfield General Casey Pam Grier Louise Williams Jack Black Billy Glenn Norris Ray J Cedric Brandon Hammond Neville Joe Don Baker Glenn Norris O-Lan Jones Sue Ann Norris Christina Applegate Sharona Brian Haley Mitch Jerzy Skolimowski Dr. Zeigler Barbet Schroeder French President Tommy Bush Hillbilly Joseph Maher Decorator Willie Garson Corporate Guy John Roselius GNN Boss Michael Reilly Burke GNN Reporter #1 Valerie Wildman GNN Reporter #2 Richard Irving GNN Reporter #3 Steve Valentine TV Director Coco Leigh Female Journalist Enrique Castillo Hispanic Colonel John P. Finnegan Speaker of the House Gregg Daniel Lab Technician J. Kenneth Campbell Doctor #1 Jeanne Mori Doctor #2 Rance Howard Texan Investor Richard Assad Saudi Investor Rebeca Silva Hispanic Woman Jack Nicholson President Dale / Art Land Glenn Close Marsha Dale Annette Bening Barbara Land Pierce Brosnan Donald Kessler Danny DeVito Rude Gambler Martin Short Jerry Ross Sarah Jessica Parker Nathalie Lake Michael J. Fox Jason Stone Rod Steiger General Decker Tom Jones Himself Lukas Haas Richie Norris Natalie Portman Taffy Dale Jim Brown Byron Williams Lisa Marie Martian Girl Sylvia Sidney Grandma Norris Paul Winfield General Casey Pam Grier Louise Williams Jack Black Billy Glenn Norris Ray J Cedric Brandon Hammond Neville Joe Don Baker Glenn Norris O-Lan Jones Sue Ann Norris Christina Applegate Sharona Brian Haley Mitch Jerzy Skolimowski Dr. Zeigler Barbet Schroeder French President Tommy Bush Hillbilly Joseph Maher Decorator Willie Garson Corporate Guy John Roselius GNN Boss Michael Reilly Burke GNN Reporter #1 Valerie Wildman GNN Reporter #2 Richard Irving GNN Reporter #3 Steve Valentine TV Director Coco Leigh Female Journalist Enrique Castillo Hispanic Colonel John P. Finnegan Speaker of the House Gregg Daniel Lab Technician J. Kenneth Campbell Doctor #1 Jeanne Mori Doctor #2 Rance Howard Texan Investor Richard Assad Saudi Investor Rebeca Silva Hispanic Woman Josh Philip Weinstein Hippie Ken Thomas White House Photographer Frank Welker Various Martians (voice)