Come celebrate the career of writer, actor, and producer John Levenstein (“Arrested Development,” “Silicon Valley”), as he strives do a lot of good on his way out the door. At “John Levenstein’s Retirement Party,” Levenstein draws from his career in show business to share personal stories from the writers’ room, offer advice, rehash old decisions, settle feuds, and tell friends he loves them. Along with his co-host, actress and writer Mary Kobayashi, reflect on nostalgic moments with guests like Karen Kilgariff (“My Favorite Murder”), Nick Kroll (“Kroll Show”), Jill Soloway (“Transparent”) and David Harbour (“Stranger Things”).