NBC and FOX shows image goes off screen?

Hi, ive noticed the past few weeks, maybe a month, when i watch shows on NBC like Law & Order SVU and The Simpsons, part of the screen is cut off, like its zoomed in a little too much. For example, during SVU theyll cut to a shot of Olivia and Elliot, and while theyre talking, both of them are half way off the sides of the screen. Now this only happens on these two channels as far as I know, anybody know what the problem may be and if theres a way to fix it? Its kind of distracting.