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As the video below rightly points out, LL faces the difficult of task of making Grammy hosting cool again. Luckily, he's a double-threat known for both his rapping and his acting, and in that sense, the good-natured MC seems a fine choice for emcee.
He's unlikely to say anything too controversial, but he's got enough edge to keep the kids interested. Cross him, and he will knock you out. His mama said he could.