Families feasted not only on turkeys but also on penguins as the Thanksgiving holiday got underway at the box office. Warner Bros.' animated Happy Feet appeared to ice the No. 1 spot as it took in $7.4 million on Wednesday, well ahead of the James Bond flick, Casino Royale. In third place was the debuting Jerry Bruckheimer sci-fi thriller, Déjà Vu, starring Denzel Washington, with $3.6 million.