35% of American iPad or tablet use happens in front of the TV

"Companion device usage while watching TV is big, too. 35% of tablet and iPad usage occurs in front of the television, and this is before we really have that many robust and specialized applications to truly enhance or support better TV viewing experiences. Many (including me) predict that app-enabled iPhones, tablets and iPads will be the dominant "remote controls" for home television in a few years."

Source:  Data from the Social TV Summit in LA, reported by MediaPost, 21st July 2011