I saw this movie yesterday and I liked it, it had a cute storyline. It's not my favorite Pixar movie. If I did some other comparisons to other Pixar movies, Finding nemo, Cars, and Toy Story captured more of the emotion in their stories than Ratatouille. IMHO.
At one point in the movie I had a flashback to the movie *Willard*, the 1971 classic movie, Eeek! which kind of freaked me but the RATS were good in this one.