It shouldn’t be a surprise to learn co-stars don’t always get along when the cameras aren’t rolling, but the on-screen professionalism of some TV duos does a great job at concealing real-life feuds. Like Will Smith and Janet Hubert, many of the real-life disputes have been buried. However, there are some feuds, such as the one between George Takei and William Shatner, that have lasted for years.