Regarding the first item (biofeedback), I've seen Emotiv's demo live at Tokyo Game Show, and it's not at the point where everyday people would want to use it. Basically, it's a lightweight cap that can detect when you're getting relaxed. As you can imagine, this does not lend itself well to the kind of subtlety required to control anything.
That being said, it has interesting applications in quasi-meditation practices, and of course for the disabled.
That being said, it has interesting applications in quasi-meditation practices, and of course for the disabled.