John Travolta was 18 in Nightmare when he played the character 'Man Outside Store (uncredited)'.
That was over 50 years ago in 1974.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 69, and has starred in 104 movies in total, 102 of those since Nightmare was released.
In Nightmare, I think John Travolta looks: