“Roll Bounce” spins an endearing but wildly uneven coming-of-age drama set against the popular ’70s phenomenon of “jam skating.” Funky disco-era throwback never fully jells with a ...

Roll Bounce: Comedy. Starring Bow Wow, Chi McBride, Mike Epps and Nick Cannon. Directed by Malcolm D. Lee. (PG-13. 112 minutes. At Bay Area theaters.) It would have been so easy for the makers of ...