When I was in Japan in 2008, my friend's cell phone screen could rotate out 90 degrees (into a traditional 16:9 TV-looking layout [1]) and he could watch quite a few TV channels on it that way.
This wasn't something he was paying for, it was just part of his base plan apparently..
It's called 1seg and is part of the Japanese digital terrestrial OTA TV network (the regular digital OTA broadcasts contain a low-bandwidth stream for mobile devices to pick up).
