My favorite movies are Science-fiction movies. I like watching movie to escape our normal everyday lives. Science-fiction movies really allow thought for the impossible, or the possible but more advanced technology than we have today.
I don't know if it would be my all time favorite but a very good example of a science fiction movie I like is Avatar. It came out in 2009. The main character, an ex-marine, is able to use an avatars body instead his own, which has no use of his legs. His Avatar allows him to find another life along side the race that lives there. http://www.youtube.com/watch?v=cRdxXPV9GNQ
Mary Astor was a famous silent film actress in the early 1920's, starting at age 14, and continued her career into the later films. She was in the film 'Beau Brummel', 1924, which was her turning point film. I know it would be difficult to switch from silent to films with audio and more length because the material would be so much different.