"I get to touch people's lives with what I do," says gourmet chef Carl Casper in this likeable road-trip comedy. He is talking about the food he makes, which does look mouth-watering, albeit perhaps not life-changing. But the line is one of several in which the film's writer, director and star Jon Favreau would seem to be directly voicing his own thoughts about the differences between work and a vocation; between financial and artistic success; and between creative people and critics.