One of the good things about placing your TV in a corner is that, depending on the seating arrangement in your living room, it can widen the viewing area. If you have L-shaped seating for example, everyone can get a better look at the TV, rather than if the screen was against a wall.
Corner TV stands for flat screens:
Corner TV stands for flat screens example. Pictured: Techcraft BAY4632 Corner TV Stand for Up To 48-Inch TV (Walnut)