Jamie Lee Curtis talks about celebrating 40 years of marriage with Christopher Guest, how he proposed to her, loving flash mob proposals, retracing Lewis and Clark's expedition, her new show 'The Sticky,' winning an Emmy and an Oscar, her new movie The Last Showgirl with Pamela Anderson, and supporting Children's Hospital of Los Angeles on Giving Tuesday. Watch 'Jimmy Kimmel Live!' WEEKNIGHTS 11:35/10:35c on ABC. Stream on Hulu.