With the country's rapt attention focused on Janet Jackson's boobie, er, I mean the Super Bowl, it was a slow weekend at the box office — with one exception. The urban dance flick You Got Served surprised industry analysts by debuting at No. 1 with a potent $16 million. Two other newcomers — the SAT heist flick The Perfect Score and the Owen Wilson comedy The Big Bounce — flunked, taking in a combined $8 million. Meanwhile, last week's Oscar nods gave a slight boost to best picture contenders Lord of the Rings, Mystic River, Master and Commander and Lost in Translation.