Some of these would be difficult even without trying to control a bike at the same time.
We've all seen guys on motorcycles popping wheelies. In fact, you've probably seen it enough times that it may no longer even be obvious how much control it takes to pull off. But even if that's true, the following video takes these kinds of stunts to a whole new level. Not only are some of them impressive just for their display of acrobatic prowess, but managing to keep the bike upright with two people performing stunts is extra impressive.
We're not entirely sure where this video is shot, but it certainly looks like Southeast Asia.