Dr. Retard

If you want positive hip-hop, then look no further than the film Leprechaun 5: Leprechaun in the Hood. It features Postmaster-P, an upstart young rapper who wishes to "deliver positivi-tee". Of course, he and his pals get mixed up with an evil leprechaun, and the ineluctable hijinx and hilarity (not to say shamrocks and shenanigans!) you've come to expect from the Leprechaun franchise ensue forthwith.