Uggh, I'd love to give this place only four stars because of the woefully slow service but the food/decor/atmosphere are just excellent.
We've been three times now, and each time we discover new dishes (steamed sea bass, tempura lobster replete with head & tail) and old favorites (hamachi sashimi, edamame - with truffle salt) are prepared with excellence, something they take seriously as the kitchen/prep staff is entirely visible from nearly any spot in the restaurant.
The decor is fiendishly nice as befits the Encore; decadent but not ostentatious, simple but radiant & bright - perfect for a meal of this magnitude. Again, expect to sit for at least three hours because they are always crowded and the haughty servers do you no favors, but this is dining at it's most fun - especially if you're on a business tab.