Though the restaurant was only supposed to be a temporary experiment, Thomas Keller's home-style prix-fix diner has settled in for the long haul after enthusiastic eaters practically mobbed the place. Unlike other chef-lebrities who've lowered standards to accommodate eager fans, Keller's trademark perfectionism is evident in everything from the attentive (but casual) service to the family-style entrees that manage to be both elegant and homey at the same time. And hey, you can't beat the $45 price tag