John Cleese was 34 in Monty Python and the Holy Grail when he played the character 'Second Swallow-Savvy Guard / The Black Knight / Peasant 3 / Sir Launcelot the Brave / Taunting French Guard / Tim the Enchanter'.
That was over 49 years ago in 1975.
Today he is 84, and has starred in 161 movies in total, 142 of those since Monty Python and the Holy Grail was released.
In Monty Python and the Holy Grail, I think John Cleese looks: