I've been to the Ramsay steakhouse in Paris and Hell's Kitchen in Caesar's, both are spendy but very good.
The Burger Bar had a burger that was like $60, but I would rank it along with some of the best meals I've ever had. Kobe-style Wagyu Beef from Australia, sautéed foie gras and shaved truffle. And the fries are the best I've ever had. I don't really drink any more, but they also had an awesome selection of Belgian ales to go along with the meal.
I originally went there because of an episode of No Reservations where Bourdain admitted that he couldn't make fries (which were his claim to fame when he was staring out as a head chef) better. The place was created by Hubert Keller, who most of the big-name chefs look up to, who wanted to have a more casual place.