That was over 36 years ago in 1985.
Today he is 82, and has starred in 134 movies in total, 111 since Back to the Future was released.
In Back to the Future, I think Christopher Lloyd looks:
Back to the Future scores 8.1 out of 10 on The Movie Database.
Christopher Lloyd's first acting role was as 'Taber' in One Flew Over the Cuckoo's Nest, released in 1975 when he was 37.