PC Stats posted a review on the Samsung LN52A850S1F A850 52-inch LCD HDTV

There's much to get excited about with Samsung's 52" LN52A850S1F LCD HDTV, commonly known as the 'A850'. For starters this LCD HDTV ups the ante with the ability to play movies/music/pictures directly from a USB mass storage device or over a home network connection and it's screen is less than 2" thick, making it one of the thinnest large screen TV's out there. For those of you obsessed with specs and numbers, Samsung's A850-series stacks up like this: the 52" diagonal LCD screen boats a contrast ratio of 70,000:1 (dynamic), a brightness value of 500nits, industry standard viewing angles of 178/178 (horizontal/vertical), and a 4ms pixel refresh rate. The LN52A850S1F has a native resolution of 1920 x 1080 pixels and can maintain both 60Hz and 120Hz refresh rates. It's ATSC digital TV tuner picks up over the air signals without any additional hardware, and the screen boasts no fewer than four HDMI inputs.

Samsung LN52A850S1F A850 52-inch LCD HDTV Review