Peter Krause Nate Fisher Jr. Actor Rachel Griffiths Brenda Chenowith Actor Richard Jenkins Nathaniel Fisher Sr. Actor Frances Conroy Ruth Fisher Actor Michael C. Hall David Fisher Actor Lauren Ambrose Claire Fisher Actor Freddy Rodríguez Federico Diaz Actor Mathew St. Patrick Keith Charles Actor Lili Taylor Lisa Kimmel Fisher Guest Star Jeremy Sisto Billy Chenowith Guest Star Joanna Cassidy Margaret Chenowith Guest Star Robert Foxworth Dr. Bernard Chenowith Guest Star Glenn Fitzgerald Aaron Buchbinder Guest Star Ed O'Ross Nikolai Guest Star Justina Machado Vanessa Diaz Guest Star Aysia Polk Taylor Guest Star David Norona Gary Deitman Guest Star Efrain Figueroa Andrew Perez Guest Star Eric Bruskotter Keith's Partner Guest Star Gina Morelli Leticia Perez Guest Star Vincent Castellanos Beauty Parlor Owner Guest Star Jennie Vaughn Abused Wife Guest Star Karl Makinen Abusive Husband Guest Star Travis Wester Henry Guest Star Diana Castle Trust Lawyer Guest Star Jim Abele Social Worker Guest Star Austin Nichols Kyle Guest Star Richard Lynch Commitment Ceremony Presider Guest Star Alan Ball Executive Producer