ALL ABOARD -- Actress Diane Keaton celebrated son Duke's fifth birthday with friends at Disneyland this weekend. The Oscar-winner was the first VIP guest aboard the newly refurbished Disneyland Lilly Belle. The lavishly decorated private railroad caboose returns officially to "The Happiest Place on Earth" this week after an eight-year absence. The Lilly Belle is named after Walt Disney's own backyard locomotive which also shares the name of his wife, Lillian Disney.