Which movie(s) is this scene from?

How many times was the movie script rejected before it finally became a movie?

What phrase does the Doc Brown repeat throughout the trilogy?

How many gigawatts does it take to jump through time?

What car did Doc Brown turn into a time machine?

Name Marty McFly's archnemesis

Who was Marty girlfriend (who later became his wife)?

Doc Brown had 2 dogs, one in 1985 and one in 1955. What were their names?

In part 3, Biff's great grandfather is the villain. What's his nickname?