By Jimmy Traina Both made epic entrances to their latest pregame shows. 1. With all due respect to the Heat and Celtics and the Warriors and Mavericks, the best highlights of the NBA weekend came from studio hosts Charles Barkley and Stephen A. Smith. Both men decided to up their game for their entrances to their respective pregame shows. With the Western Conference finals moving to Dallas on Sunday night, Barkley came to the Inside the NBA set on a horse. Because Inside the NBA is the best sports studio show of all time, the cast did not disappoint, with Shaq and Kenny Smith rooting for Barkl…