
Acting · 60 years old
Chicago, Illinois, USA
Robert Michael O'Hare Jr. (May 6, 1952 – September 28, 2012) was an American actor who performed on stage and television. He was best known for playing Commander Jeffrey Sinclair in the science fiction television series Babylon 5, a role he left due to serious mental health issues. Born in Chicago, Illinois. He attended Chicago's Mendel Catholic Preparatory High School, then studied at Harvard University, where he majored in English literature. He studied at the Juilliard School of Drama, and with Sanford Meisner.

Babylon 5
Ambassador Jeffrey Sinclair

Babylon 5
Jeffrey Sinclair

Law & Order
Roy Lawlor

Law & Order
Mr. Tobin

Tales from the Darkside
Jimmy

Babylon 5: In the Beginning
Lt. Cmdr. Jeffrey Sinclair (archive footage)

L.A. Law
Michael Lattimer

The Equalizer
Alex

T. J. Hooker
Cal Jastrow

Trapper John, M.D.

Last Exit to Brooklyn
Riot Police Officer

Babylon 5: The Gathering
Cmdr. Jeffrey Sinclair

The Promise
Ben Avery

Kate & Allie

The Ambulance
Hal

C.H.U.D.
Fuller

The Pursuit of D.B. Cooper
Car Owner

Fly Away Home

Keefer
Benny

Marciano
Allie Columbo