Sarah Michelle Gellar and Robin Williams are to star in the pilot for a CBS workplace comedy called \"Crazy Ones,\" EW.com reported. Written and produced by David E. Kelly, the show is about a father and daughter who run an advertising agency together. Gellar starred on the iconic supernatural series \"Buffy the Vampire Slayer.\" Williams is an Oscar-winning actor and stand-up comedian. His film credits include \"Good Morning, Vietnam,\" \"Good Will Hunting,\" \"Dead Poets Society,\" \"Awakenings\" and \"The Birdcage.\"