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 Jeremy Sisto Billy Chenowith Actor Ed O'Ross Nikolai Guest Star Mary Gross Floral Instructor Guest Star Eric Balfour Gabe Dimas Guest Star Justina Machado Vanessa Diaz Guest Star Michelle Ruben Amber Guest Star Gary Hershberger Matthew Gilardi Guest Star Wendy Schaal Vickie Dimas Guest Star Blake Adams Brad Guest Star Patrick Cavanaugh Mike Cooper Guest Star Veronica Lauren Paula Cooper Guest Star Jenette Goldstein Obstetrician Guest Star Joel Brooks Robbie Guest Star Harry S. Murphy Kroehner Funeral Director Guest Star Linda Klein Delivery Room Doctor Guest Star David Ursin Processing Officer Guest Star David Doty Neil Schaeger Guest Star Steve Hofvendahl Raymond Dooley Guest Star Jonathan Brent One-Night Stand , Prostitute Guest Star Alan Ball Executive Producer Rick Cleveland Writer Michael Engler Director