An article on suggests that the new US pastime is not baseball, not TV, but … multitasking:

No one can take the public’s attention for granted today; first the advent of cable television fragmented viewing patterns, and then came the boundless Internet, followed by the creative forces that provide the content for all those little personal screens. Apple offers around 700,000 separate applications, as does Google. A lot of ways to pass the time, in a nation with a twitching concentration span.