Early life

He was born on September 24, 1965 in Alexandria, Virginia, where he graduated from T. C. Williams High School.

Personal life

His brother is actor Dermot Mulroney.

Filmography

Television

• NCIS as Lt. Reynolds
• Judging Amy as Mr. Sinkler
• The Guardian as Robert Twain
• NYPD Blue as Andrew Sloin
• ER as Marty's Father
• Seinfeld as Timmy, the character who rebukes George Costanza for double dipping a tortilla chip at a funeral reception
• Star Trek: The Next Generation episode "The Outrageous Okona"
• Star Trek: Enterprise episode "Fortunate Son"
• From the Earth to the Moon as astronaut Rusty Schweickart

Film

• Gettysburg as Maj. G. Moxley Sorrel
• Career Opportunities
• The Spitfire Grill as Joe Sperling
• The Immortals

Writer

• Paper Man
• Sherlock Holmes: A Game of Shadows
• Geostorm

Director

• Paper Man - Credited as director alongside Michele Mulroney

Producer

• Wild Tigers I Have Known - Executive producer

[ Source: Wikipedia ]