LG has made a habit of wowing us with new 4K OLED TV sets at CES for the past few years, and this year isn't any different. With its insanely thin W-series, the company has managed to outdo its still impressive G6 "Picture on Glass" TVs. LG's tagline for the W-series 4K sets -- "Picture on Wall" -- sums up their appeal. At just 2.6mm thin across their entire frame, they can be mounted completely flat against your wall. They look more like a work of modern art than any television I've seen.