Granted, I don't think most kids are going to start eating like Homer, but a friend of mine stopped letting her kids watch The Simpsons when her kids starting talking to her like Bart (using a lot of the same phrases).
Kids are influenced by and at times will mimic what they see on TV. I've seen and heard my own kids acting out things that they have seen on TV and using phrases from some of the shows they watch. Most of the time, it's harmless but I do draw the line at mimicing disrespectful attitudes and behavior.