Food brings families together -- and for the cast of "Blue Bloods," that is most certainly the case. In fact, most of its viewers would say it's the show's trademark, and what transforms the series from procedural to its own unique genre: a fully fleshed-out family cop drama. "Blue Bloods" centres on the Reagan family, most of whom work in New York's law enforcement. There's Frank (Tom Selleck), the police commissioner; son Danny (Donnie Wahlberg), a detective; daughter Erin (Bridget Moynahan), an A.D.A.; son Jamie (Will Estes), a beat cop; and Frank's father, Henry (Len Cariou), the retired former police commissioner. Because of how closely linked their jobs are, the plots, more often than not, connect the criminal stuff to the familial. Aside from the family ties and procedural aspect, which are gripping in their own right, what makes "Blue Bloods" so special is the family dinner that happens each week. Not only do the Reagans ge...