In just three weeks, “Shrek 2” has become the biggest animated film ever, topping Pixar’s “Finding Nemo.” “The sequel to the 2001 animated hit took in an estimated $24 million over the weekend to reach $354 million,” reports USA Today. “Nemo netted $339.7 million after seven months in theaters. That makes the DreamWorks comedy about an ogre and his lady love the ninth-biggest movie ever.”