First of all, there is a new edition of Kurosawa's masterpiece out now from, of course, Criterion.  It's rather staggering in its quality.  If you've never seen the movie, you'll never have a better chance to experience it than now.  Even if you own the previous edition, just go out and buy the new one, I'm serious, it's just rather staggering.

Plenty of words have been spent talking about this movie so I'll keep this brief.