boredeom is a phase

And the other thing is, you hear a lot of actors -- and I'm not being negative here -- a lot of filmmakers, for instance, will say that if you over-rehearse it gets boring, you lose its freshness, spontaneity. But what I always understood was, boredom is just another phase. You get through that. And once you get through that, that for me was always a sign that you'd broken the back of whatever problem was blocking you. You'd gone through it and gone through it and gone through it -- and sometimes you don't even understand why suddenly it feels fresh again. But he wouldn't shoot until it had gotten to that point. That, for me, was the wonderful thing about working with him, because you could trust him to see that point where it's beginning to work, then... Bang! It was like shooting shit off a shovel. It was just take after take after take. And each time, something else would come from that. Then the scene could change again.

-- Jamie Stuart on working with Stanley Kubrick

Short version: its cool to lurv Barry Lyndon now.