Oh, and RE: UNFORGIVEN ... the scene right after the kid kills the whore-cutter on the shitter, when Munny finds out Ned was murdered and starts drinking while the kid has his little meltdown -- it's amazing how many classic lines of dialogue spring from just that scene. Basically everything that comes out of Eastwood's mouth during that couple of minutes is iconic.
(Can you even use the term "iconic" to describe spoken dialogue? Eh, probably not, but fuck it. I couldn't think of a more appropriate word.)
Same goes for "You better bury Ned right, and don't be cuttin' or otherwise harmin no whores," etc, etc.
So, yeah, I'd say iconic applies.