That was over 35 years ago in 1987.
Today he is 75, and has starred in 146 movies in total, 134 since Lethal Weapon was released.
In Lethal Weapon, I think Danny Glover looks:
Lethal Weapon scores 7 out of 10 on The Movie Database.
Danny Glover's first acting role was as 'Inmate' in Escape from Alcatraz, released in 1979 when he was 32.