Zac Efron stepped into HBO Hollywood, filming a guest starring spot for the next season of Entourage in LA yesterday. Between takes, he and Jeremy Piven happily posed with a young female fan. Zac is just one of many cameos — from Tom Brady to Lil Wayne — we can expect when the show returns in July. While Zac is moving on to new roles, he still supports his former projects, for example giving his encouragement to Chace taking on Footloose.
To see more of Zac on set just