The lovely CALISTA FLOCKHART makes her first appearance on the show and chats about her return to television with the hit drama "Brothers & Sisters (ABC, Sunday @ 10pm)." TY PENNINGTON shares heartwarming stories from his hit show, "Extreme Makeover: Home Edition (ABC, Sunday @ 8pm)." DEF LEPPARD, perform their classic "Pour Some Sugar On Me." And, don't miss another installment of WRITE ON, when Ellen reads your e-mails.