PHOENIX (Reuters) - Sometimes a breast is just a breast. Howard Dean, a physician and a Democratic presidential candidate, on Monday dismissed as "silly" a government inquiry into whether indecency rules were broken during the broadcast of the Super Bowl halftime show when pop diva Janet Jackson's bodice was ripped to expose her right breast. "I find that to be a bit of a flap about nothing," the former Vermont governor said. "I'm probably affected in some ways by the fact that I'm a doctor, so it's not exactly an unusual phenomenon for me." During the break in the National...