Special Guest Stars Adam Scott as Ben Wyatt Rob Lowe as Chris Traeger Guest Stars Retta as Donna Meagle Jim O'Heir as Jerry Gergich Natalie Morales as Lucy Jama Williamson as Wendy Haverford Co Starring Cooper Thornton as Dr. Harris Nicole Pettis as Paula Claudia Choi as Claudia Deb Hiett as Deb Isabel Eggerling as Chelsea Marcus Folmar as Marcus Deborah Puette as Cathy Julia Silverman as Florence Brian McCann as Freddy Spaghetti Emily Adams as Janice Guy Stevenson as Guy