Robin Williams Simon Roberts Actor Sarah Michelle Gellar Sydney Roberts Actor James Wolk Zach Cropper Actor Hamish Linklater Andrew Keanelly Actor Amanda Setton Lauren Slotsky Actor Brad Garrett Gordon Lewis Guest Star Josh Groban Danny Chase Guest Star J.D. Walsh Randall Guest Star Tiya Sircar Allie Guest Star Fred Melamed Himself Guest Star Steve Talley Owen Guest Star John Marshall Jones Mitch Guest Star Jonno Roberts Grant Guest Star Molly Beucher St. Pauli Girl Guest Star Daniel Bess Dylan Guest Star Carol Kiernan Tammy Guest Star Maria Teresa Zuppetta Agency Staff Guest Star Ari Stidham Crowd Member Guest Star Marilyn Mattor Little Girl in Library Guest Star Vanessa Giselle Makeup Artist Guest Star David E. Kelley Executive Producer Bill D'Elia Executive Producer, Director Jason Winer Executive Producer, Director Tracy Poust Executive Producer, Writer Jon Kinnally Executive Producer, Writer Dean Lorey Executive Producer, Writer John Montgomery Executive Producer Mark Teitelbaum Executive Producer Laura Krafft Writer Amy Hubbs Writer Joe Port Writer Matt Sohn Director Alex Hardcastle Director Mason Steinberg Writer Fred Savage Director