I hope you enjoy this link as much as I did. I love that some of the best scenes and lines in movies were ad lib, think about Casablanca’s “Here’s looking at you, kid”, or Aliens’ “Game over, man”, as the drop ship crashes into the planet, and try to think about Young Frankenstein without Gene Hackman’s “Wait, I was going to make espresso”.
For me, this is the mark of an actor who is truly in character, and it shows so much about a director who can recognize such perfection and keep it in the film.
Check this blog for some more. Click Screenrant.