These are really just the tip of the iceberg. Once you really get into thinking these up, it's so difficult to filter them. Here are the ones that came to me in the first couple minutes, though. Also, all of these are classic movies so if you haven't seen them, you should (ahem @EJo).
  1. Michael Corleone's turn in "The Godfather."
    This is a tough one, because there are so many to choose from here, but this has got to be my favorite. It's the thematic turning point of the movie, and also, for Michael. In one slow push in, he goes from being the good-natured American war hero, to a stone-cold murderer.
  2. Card tricks in "Butch Cassidy and the Sundance Kid."
    Just cool. The pan up is everything. The movie, the scene, the performance doesn't work without it. Well, it does. But not as well.
  3. Happy New Year in "Gold Rush."
    After spending all of his earnings on cooking for the girl he loves, she forgets to come because she's having such a good time at the party. The wide shot of him just staring, and the look on his face, it breaks my heart.
  4. Plastic Jesus in "Cool Hand Luke."
    He just found out his mother died and knows he won't be able to go to her funeral. The look on all the faces of the inmates as they watch their hero cry. "Going 90, it's not scary as long as I have the Virgin Mary..."
  5. Fight scene in "Mikey and Nicky."
    Nine minutes long and not one false note. You can see other cameras in the bushes and technically it breaks so many rules, but it doesn't matter because this scene is so fascinating on so many levels.
  6. The Human Torch in "The Last Detail."
    Watching this scene makes me want to drink ten beers on a cold, cold night. This entire sequence is so natural and funny. I don't think there's anything else quite like it.
  7. Russian Roulette in "The Deer Hunter."
    The most intense, emotional scene EVER. I can watch it over and over and over.
  8. You can't get to me in "Opening Night."
    Gena Rowlands plays an actress having a major emotional breakdown after witnessing a girl die. She tries her best, but can't manage to get thru this scene in rehearsals for a play.
  9. Just gamble on in "Giant."
    His best scene in his best performance (there were only three).
  10. Queen of the Nile in "A Streetcar Named Desire."
    Not even gonna say anything. @EJo please watch this??