Robert Prosky Robert Prosky

Robert Prosky, best known to TV audiences as Sgt. Stan Jablonski on Hill Street Blues, has died. He was 77.

Prosky passed away Monday night in Washington, D.C. from complications following a heart procedure, his son Stefan Prosky told The Associated Press.

"He went gracefully last night, not in pain," Stefan Prosky said. "Everybody knows him as a fairly famous actor. My brothers and I know him as a marvelous father."

A veteran of not only television, but of stage and film as well, Prosky got his start in productions on the Arena Stage in Washington, D.C., spending a total of 22 years there and appearing in more than 120 plays.

His Broadway credits include Glengarry Glen Ross and A View from the Bridge.

On the big screen, Prosky made a memorable turn in Mrs. Doubtfire as the TV station owner who hired Robin Williams. The actor also appeared in Dead Man Walking, Rudy and The Natural.

Joining Hill Street Blues in 1984 as the new sergeant of the precinct, Prosky spent three seasons on the cop drama, and later costarred for a season on Veronica's Closet.

In addition to son Stefan, Prosky is survived by wife, Ida, and two other sons, John and Andrew.