LOS ANGELES (TheWrap.com) – Whether you’re a card-carrying Gleek or you think Fox’s weekly high -chool musical long ago jumped the shark (with jazz hands), you may find yourself falling under the spell of “Pitch Perfect,” an unassuming little comedy with enough cleverness, energy and sheer charm to break out among the crowded slate of fall films. Even if its underdogs-go-for-the-title storyline doesn’t break much new ground, the very appealing cast (led by ingénue superstar Anna Kendrick) and an overall sense of buoyant silliness advances it to the top of the class. …