Google TV is a software platform developed by Google, Sony, Intel, Logitech, and Dish Network that combines web content with television and allows users to run apps on their TVs. It uses the Android operating system and allows users to search the web from their TV, access online video and apps, and use their phone as a remote control. While Google TV has advantages like accessing web content on a larger screen and new opportunities for developers, it also faces challenges in market reach and may require changes in user behavior.