This movie was great, it was by Disney and Pixar, who also made the movie Toy Story. Now, I dont normally watch cartoon movies because I am always worried that they will be boring and hard to watch, but the two main characters playfully contrasted each other so well in the movie it was hard to take my eyes off of the screen. I was forced to watch the film by the kids I babysit for, but after it was over, I was pleading with them to let me borrow it and thats how good it was. Referring to the cast, well I believe the voice of the blue monster Sully was John Goodman, and his gruff, loveable, paternal voice helped the flow of the movie. Mike, the green one-eyed monster was the voice of Billy Crystal and he was wacky and witty as he always is. I dont want to give away too much of the story-line, but the plot is nicely written...its a story about two monsters who embark on an adventure with a little girl (whos terribly cute by the way) and their ups and downs along the way. The monsters that are supposed to be so mean to children turn out to be nothing but teddy bears in the closet! I highly recommend this movie to children of all ages.