Man, it tough to choose from that lot. I've got to go with Kurosawa on this one, although Scott and Kubrick are bringing up a close joint second. Lion in Winter was excellent as well. Hell, just go watch each of them over and over again until your eyes fall out!
I voted for Blade Runner because the only other movie on the list I've actually seen is The Lion In Winter. While I really liked The Lion In Winter, I only saw it once and so long ago I barely remember it.
All of the above. They were all fantastic. Of the bunch though, I wonder if Apocalypse Now is as deep and meaningful to residents of countries other than the U.S. The Vietnam War affected our country more than any other, with the exception, of course, of Vietnam. So even though there are universal themes present, using this particular war as a backdrop setting enhances the meaning of this film in the eyes of the American people. Martin Sheen's confusion, weariness, resolve, inner conflict and turmoil all serve as an excellent surrogate for the American psyche at the time.
The theatrical release had a really crappy ending (green trees, voice over) - it was finished by the financial backers since the movie run over budget.
The Director's Cut had a bit of a better ending (no green trees, no voice over) - but it was still weak (dove flying away shot looks like pure stock) and some scenes were still missing.
Blade Runner is about to be re-released this December. Cleaned up, digitized film, and they've finally found all the missing scenes (we finally learn the true nature of Deckard). Watch this version, it promises be much more rewarding.