I like L'Atelier because it gives you many options for trying out Joel Robuchon's cuisine. Unlike the Joel Robuchon Restaurant next door, L'Atelier has many different prix-fixe menus to choose from, ranging from $52-$159 per person. Every plate has been beautiful and delicious.
1 star off: Service can be hit-or-miss. Some servers explain the dish well, and some do not. We had one server who handed us our desserts and just said, "Here's your coffee dessert." Because the dish had so many elements to it, it would be helpful to get even a little more information -- like what is this gold-colored, squiggly thingy on the...ice cream? (I know my culinary vocab, for sure.)
Secret Tip: Try the mashed potatoes. I am not joking. I do not joke when it comes to food.