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America sends Harrison Ford and Aerosmith into space to take out a killer asteroid in "Meteorgeddon." Household animals take to the slopes for "Winter Pet Games." Chucky from the Child's Play series takes on the cutesy Lettuce Head Kids in the opening to season 8 of Buffy the Vampire Slayer. The Muppet Show's band is spotlighted in "Behind the Music: Electric Mayhem."