That was over 43 years ago in 1978.
Today he is 70, and has starred in 87 movies in total, 85 since Coma was released.
In Coma, I think Ed Harris looks:
Coma scores 6.5 out of 10 on The Movie Database.
Ed Harris' first acting role was as 'Pathology Resident #2' in Coma, released in 1978 when he was 27.