The guest list for the 41st season of Sesame Street premiering Sept. 27, reads like a who’s who of Hollywood hipness. Just a few of the actors: Jude Law, Amy Poehler, Jennifer Garner, Kyra Sedgwick, Collin Farrell, Wanda Sykes and Terrence Howard. But wait, there’s more, such as music superstars Katy Perry, Usher, will.i.am and NFL players Reggie Bush and LaDainian Tomlinson. And fans of the gory/sexy HBO series True Blood, stay tuned for its Sesame parody, “True Mud.”