I was just discussing this with my wife the other day, here's a great movie scene, from the movie The Untouchables starring Kevin Costner and Sean Connery. There are two brilliant scenes in this movie - "brings a knife to a gun fight!" - , actually (this one says it was a deleted scene but I remember it, maybe from VHS I guess), and Connery kills in both. I'm not a big Costner fan, but I can put up with him if Connery is stealing his scenes.
My senior year in college I took a voice acting class to improve my vocal talents for my job in radio. It was mostly freshman in the class, and I think I was the only senior, though there were several "non-traditional" students. Anyway, we had to do a lot of monologues from Shakespeare and the like but when we were assigned a monologue of my choosing, I watched this scene enough times to memorize it (cutting out the two lines from Costner) and when I got on stage to give my performance in class, I killed like Connery, getting an ovation.
You said you wanted to know how to get Capone. Do you really want to get him?
See what I'm saying? What, are you prepared to do?
If you open the ball on these people Mr Ness, you must be prepared to go all the way. 'Cause they won't give up the fight... until one of you is dead.
You want to get Capone, here's how you get him: He pulls a knife, you pull a gun. He sends one of yours to the hospital, you send one of his to the morgue! That's the Chicago way! That's how you get Capone.
Might sound dumb, but it was pretty cool. I added a little Connery-accent to it ("Szhe what I am saying?", "until one of you iszh dead"). Most everyone else did regular monologues from Shakespeare and the like but I brought it into the modern world and I think it was refreshing. The next time, there were people doing other modern scenes, realizing you could do some fun stuff if you find the right scene.
The next time I could choose my own scene, I chose the one from Empire Strikes Back where Darth Vader reveals to Luke that he is Luke's father. I did well with that one, too, but owing to the lack of surprise-factor, I didn't get the ovation. To this day I can still recite the Church Scene from the Untouchables, though.