Shrek and Fiona are together at last, and in this sequel to Dreamworks' "Shrek," they need to fight to stay that way.  Lord Farquaad has returned (in ghostly form) to Far Far Away. He's kidnapped Princess Fiona, and Shrek and Donkey are hot on his trail. With in-theater effects and all the humor of the original, Shrek 4-D is a fantastic family attraction.