Special Guest Stars Malcolm David Kelley as Walt Lloyd Guest Stars Nestor Carbonell as Richard Alpert Sam Anderson as Bernard Nadler L. Scott Caldwell as Rose Nadler Tania Raymonde as Alex Rousseau Mira Furlan as Danielle Rousseau M.C. Gainey as Mr. Friendly / Tom Sonya Walger as Penelope "Penny" Widmore Marsha Thomason as Naomi Dorrit Blake Bashoff as Karl Andrew Divoff as Mikhail Bakunin Julie Bowen as Sarah Brian Goodman as Ryan Pryce Lana Parrilla as Greta Tracy Middendorf as Bonnie James Lesure as Dr. Hamill Larry Clarke as customer Nigel Gibbs as funeral director Loreni Delgado as pharmacist Roxanne Day as Diane Co Starring Ari Green as Jason Kate Connor as Doctor