Mos knows success

"Grammy nominee and star of TV and movies, he's Def-initely on a career roll BY ISAAC GUZMAN The next five days are likely to be the biggest of Mos Def's career - the moment when 17 years of working as a musician and actor come into tight focus. Tonight and tomorrow, he headlines B.B. King's Blues Club, playing his first public shows since releasing his latest album, "The New Danger." On Saturday, he turns in a rollicking cameo as a Louis Jordan-style bandleader in HBO's "Lackawanna Blues." He wraps up Sunday with the Grammy Awards, where his song "Sex, Love & Money" is vying for Best Alternative/Urban Performance. Over the past few months, the actor, rapper and frequent fashion plate has grown into an all-media phenomenon."