Dr. Strangelove 

Dr. Strangelove was one of those cheesy anti-war films that proved a point by poking fun at military life. While the movie got good laughs, it was Peter Sellers, who played Dr. Strangelove in addition to two other lines, that added his own excellent lines to the script.  

When the wheelchair-bound titular doctor gets out of his chair at the end, miraculously healed, he exclaims, “Mein Fuhrer, I can walk!” It was so well done, with perfect comedic timing, that it became one of the more quotable lines from the film.