That would be…Brooksie, in the last line of his letter to his buddies at Shawshank - The Shawshank Redemption.
“How fast can you run? As fast as a leopard. How fast are you going to run? As fast as a leopard. Then let’s see you do it!”
Miller’s Crossing
John Turturro to Gabriel Byrne.
“I’ve seen things you people wouldn’t believe. Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhauser gate. All those moments will be lost in time, like tears in the rain. Time to die.”
I was gonna suggest that one! 'Twas Boromir, to Aragorn. EXCELLENT death scene.
Cap’n Barbossa, in Pirates O’ De Caribbean, mon.
My suggestion:
“It was… fun. Oh my…”
Field Marshall von Kluck, as played by Carl Reiner, in Dead Men Don’t Wear Plaid, and may I state for the record that you totally rock?
mrsmith537 - “I would have like to have seen…Montana…”
The First Mate of the Red October in The Hunt For The Red October.
DoC - Rutger Hauer as the Replicant in Blade Runner.
“It’s OK, because I got to have you.”
My offering: “For a minute there I thought we were in trouble.”
Captain Kirk to Captain Picard in Generations
And since that’s the one I was going to suggest, I got nuthin’. 
Roger, the white SWAT guy from the original Dawn of the Dead.
“Beware…the dwarf!”
“Strangest thing…”
Bruce Solomon as Bob Scott (otherwise known as Scotty) the Fed, in Foul Play!
ElectricZ…
“Don’t do it until you’re sure I’m coming back. I’m gonna try not to… I’m gonna try not to come back.”
That would be the white cop in Dawn of the Dead
“Gazpacho soup!”
2nd Technician Arnold J. Rimmer, Red Dwarf
Always look on the bright side of life…
Stephen Baldwin in The Usual Suspects.
Here are a couple more:
“Oh no…”
“We belong dead.”
Frankenstein’s Monster in Bride of Frankenstein.
Joe Pesci, Goodfellas.
“It is finished.”
Jesus in POTC. Only he said it in Aramaic.
“Shit.”
Flores. Starship Troopers. And for the crime of mentioning this movie, I hereby condemn you to have to rewatch the movie. The horror…
OK, I’ve got one:
“A…spear…”
Hard to believe this one wasn’t answered yet:
Private Vasquez, in the sequel Aliens, with the grenade round.
Oh, I’m supposed to offer a new quote… duh.
How about…
“Message for you, Sir.”
Umm, he didn’t actually die…