Review: 'Mr. Peabody & Sherman' may be too smart for its own good

'Mr. Peabody & Sherman' made a genius call in getting Ty Burrell ('Modern Family') to voice the genius dog, but it has a tough time striking the right balance in appealing to both kids and adults.In that ever-expanding world of kid/grown-up movies, "Mr. Peabody & Sherman" reveals a case of conflicted allegiances.