As I’ve said repeatedly in the past, never underestimate Clint Eastwood at Oscar time. Here’s a rousing new trailer for “Invictus,” which Warner Bros. will begin rolling out on Dec. 11, opposite DreamWorks and Peter Jackson’s “The Lovely Bones.” Clint’s movie stars Morgan Freeman as South African president Nelson Mandela and Matt Damon as the coach of the country’s first integrated rugby team. Seems like a surefire Academy Award contender to me.