Mirror is incredible, and so is Rublev, though one's gotta be in the mood for the latter. It's certainly an epic, and the prologue is one of the greatest things ever filmed, in my opinion. Anyway, Tarkovsky is a true master and you can't go wrong with him. Check out this sequence shot from Mirror. Fuck.
http://www.youtube.com/watch?v=PBZsj8FPSbo