That was over 31 years ago in 1990.
Today he is 82, and has starred in 134 movies in total, 101 since Back to the Future Part III was released.
In Back to the Future Part III, I think Christopher Lloyd looks:
Back to the Future Part III scores 7.2 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.