Abig-bang demolition derby, J.J. Abrams’s much-anticipated, greatly enjoyable Super 8 seems bound for box-office glory. Opening three weeks before July 4, this Steven Spielberg-produced, kid-centric 21st-century disaster flick could well hang in at theaters till the tenth anniversary of 9/11 — an event that haunts Abrams’s surefire blockbuster nearly as…
