William Shatner was 50 in Airplane II: The Sequel when he played the character 'Cdr. Buck Murdock'.
That was over 41 years ago in 1982.
Today he is 93, and has starred in 181 movies in total, 129 of those since Airplane II: The Sequel was released.
In Airplane II: The Sequel, I think William Shatner looks: