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 Begley Jr. Hiram Gunderson Guest Star Ed O'Ross Nikolai Guest Star Wade Williams Paul Kovitch Guest Star Raphael Sbarge Father Clark Guest Star Brian Kimmet Victor Kovitch Guest Star Frank Birney Walter Kriegenthaler Guest Star Tim Maculan Father Jack Guest Star David Norona Gary Deitman Guest Star Nancy Linehan Charles Connie Guest Star Eric Ware VA Administrator Guest Star Davis Henry Private Bailey Guest Star Gary Murphy Mooning Private Guest Star David McSwain Vet in Wheelchair Guest Star Marina Black Parisian Classmate Guest Star Ange Billman Classmate with Children Guest Star Shannon Convery Classmate with Cancer Guest Star Dianna Miranda Bride at Flower Shop Guest Star Matt Bradshaw Porno MP 1 Guest Star Alan Ball Executive Producer Christian Williams Writer Jim McBride Director