From a distance, Nick Cannons trajectory from child comedian, to actor, to writer/ creator of his own TV show and most recently CEO of his own record label, might appear to mirror the -everything now - blueprint other teen phenomenons have followed. But for the 25 year old San Diego native, who burnishes a wit and wisdom equal to the hip hop bravado that led him to forge his new label, Can I Ball Records, an engaging poise lies behind each of his recent power moves evocative of the most seasoned executive