Saving Private Ryan has a very intense opening scene.
I may not be that dramatic or surprising but I would go for the opening scene(s) in Stan and Ollie.... Stan and Ollie are in their dressing room have just had their make-up done having a cigarette and talking about their wives and what they are doing at the weekend and then they put their jackets and bowler hats on and walk out down a corridor to the film set where they immediately go in to filming the dance scene from Way out West. Marvellous to behold.
A brilliant, touching, heart-warming film, Coogan was supreme. It helps also if you liked Laurel & Hardy growing up, I did.
Watching Jaws tonight and that first scene is pretty dramatic.