Steve played intellectual detective Arthur Detreich on one of my favorite 70s sitcoms Barney Miller.
Sorry to hear this. His Barney Miller character Dietrich was irritatingly terrific!
The only other project I ever saw him in was LEADER OF THE BAND (1988) - a sort of earlier and goofier MR. HOLLAND'S OPUS.
There seemed to be some dispute as to his age. Most sources originally gave his age today as 65 but it turns out he was really 74.