OLED's are all over the place. Look at a Timex Indiglo watch, that's a OLED.
Sorry, but I'm in college for an engineering degree, and a friend did a research project on OLED's. He was showing us a video that he found on the internet of a display. A guy was holding it in his hands, twisting it back and forth, and I think it was playing Dave Mirra's doing bike tricks.
You're going to start seeing them in more and more applications, because they're cheaper to make then conventional LED's, but they still have some drawbacks. My friend didn't go into them too much, though, so I don't remember what they are.