Mather Zickel Will Keen Actor Dan Fogler Kenny Hayden Actor Christopher Moynihan Craig Griffith Actor, Executive Producer, Writer Teri Polo Theresa Hayden Keen Actor Amanda Detmer Brenda Hayden Actor Henry Simmons Grant Actor Jake Johnson Nathan Keen Actor Charlotte Labadie Lucy Keen Actor James Devoti The Groom Guest Star Chryssie Whitehead Lisa Guest Star Amber Frank Samantha Guest Star F. William Parker The Preacher Guest Star Macee Binns Bridesmaid Guest Star Nicole Buehrer Maid of Honor Guest Star Christina Gabrielle Hula Hoop Girl at Birthday Party Guest Star Armani Jackson Young Boy Guest Star Mark Roman Congregation Guest Guest Star Sahlima Sabrina Guest Star Lindsay Stuart Bridesmaid Guest Star Victor Fresco Executive Producer Beth McCarthy-Miller Director