Macworld.com – The already dizzying array of options for watching video on anything but your living room TV may soon make your head spin even faster. In the age of HD-everything, some TV and film studios initially balked at the concept of watching content on pocketable screens. But inspired in part by the iPhoneâs success, the major studios are ramping up to go mobile in so many ways, you might have to sit down to catch your breath.