Spinning screens

By now everyone has seen the Apple ads showing off the iPhone's ability to sense its own orientation and display either in "landscape" or "portrait" mode, right? Well, why couldn't they make regular TV screens do the same thing? They could attach a remotely controlled motor to allow the user to twist the screen 90 degrees, and adjust the picture to suit. Some scenes, after all, work better in that vertical format (see the example), or if one is using the monitor to browse the web, one could accommodate webpages with vertical layouts comfortably as well.

Also, you could watch movies in a super-letterboxed format, with lots of empty space above and below to put lengthy captions.