That was over 35 years ago in 1987.
Today he is 77, and has starred in 113 movies in total, 85 since Lethal Weapon was released.
In Lethal Weapon, I think Gary Busey looks:
Lethal Weapon scores 7 out of 10 on The Movie Database.
Gary Busey's first acting role was as 'Concert Attendee' in Wild in the Streets, released in 1968 when he was 23.