This is one of the nicest feats of cinematography, not to mention acting, that I've ever seen. Deb's post pointing us to it also includes a reference to the director talking about it. Keep in mind that this turns out to be just about the last chance they had to get it right -- take 40 on the second and final day they had for shooting -- but they did it.
Alas, it still doesn't make me want to take up drinking. :)