Ranking the best and worst TV apps for iPad

Apple's (NASDAQ:AAPL) iPad now generates 25.5 percent of all mobile Internet traffic in the United States and 2.1 percent of the nation's overall Internet traffic, so it's no surprise that cable companies, content providers and third parties are all targeting the device with their own branded TV apps. Some providers entered the market quickly and continue to improve their solutions, while others have spent far more time and effort fine-tuning the user experience. Which vendors rate best and worst? Click here for a comprehensive look based on factors like usability, visual appeal, available content and streaming quality.