Thousands of people woke Sunday morning as calm, collected adults. And yet a funny thing happened on the way to the TD Banknorth Garden that night. By 9 p.m., many of those unsuspecting people (mostly women in their late twenties and early thirties) had undergone a mass regression the like of which Bostonist has never before experienced. Mature members of society were reduced to shrieking, swooning schoolgirls. The New Kids on the Block's second Garden......