You wouldn't think people who are already household names would need a side hustle, what with the millions they're already making, but quite a few celebrities do seem to pursue a second career in the restaurant business. Sure, you might expect Food Network chefs to own restaurants, and many of them do, but other rich and famous restaurateurs include rappers, rockers, actors, and sports stars. Some say there are too many celebrity restaurants already, and in fact, quite a few of them fail.