To me, curved-screen ultra-HD televisions are as essential as high-def 3D, which is to say not at all. The only way it might make a real difference is if you’re sitting 24 to 30 inches away from a 70-inch screen and dead center at that. The only reason Samsung and others are making curved screens is because they’re trying to generate new revenue streams from those TV buyers who fancy themselves as high-end connoisseurs. It’s basically a big con.