My problems with The Cat in the Hat are myriad. First, I don't think the character was scary enough; you're supposed to have this giant cat who walks into Conrad and Sally's house and effectively turns their lives upside down because both don't know how to have fun on a rainy day. Mike Myers didn't convey this. Second, the movie version whacks you over the head with characterisations of the kids that are obnoxious and far too obvious; Conrad is hell on wheels and Sally is a control freak, whereas in the book, both seem stuck in the "I have nothing to do" mode, which is the way they should have left it. Finally, the film is far too adult; I'm not going to take my kids to a movie that references Playboy centrefolds when referring to the children's mother and has Mike Myers spouting lines like "Dirty hoe!"
Keep in mind that I haven't seen the whole film yet, nor do I intend to, but I have seen more than half, working where I do. It's just awful.