Mark Ronson, the A-list set's most in-demand D.J. — he's spun parties like the Met gala and is a favorite of everyone from Tommy Hilfiger to Jay-Z — isn't one for home cooking. "The only thing I really waste expendable income on is food. When I go to my accountant, he's like, 'Do you have to eat out all the time?' He's half happy I don't have a heroin addiction instead." We asked him how he allotted his dining dollars during the past week.