Simon Cowell discusses his feuds and friendship with Paula Abdul on “American Idol” before playing a game with the audience. Sean Astin shares his experience as King Bacchus at Mardi Gras and talks about his film “Bigger Than the Sky.”

Ellen, known for her iconic Halloween costumes, takes you along as she shops for the perfect look in 2005. Later, "Malcolm in the Middle" star Jane Kaczmarek stops by with her kids, shares her Halloween birth story, and showcases her dad’s latest invention.