Very cool find, lovin! There are some more experiments like the
cornstarch non-newtonian shapes on a driver diaphragm. There are fun things that can be down with phase cancellation like running two subs next to each other using slightly different sine wave frequencies. You can use suspended ribbons or flames in the middle of a large port tube to see how the slug of air within the tube resonates- I imagine that would be very cool to see in a transparent tube. Another experiment that could be done is to show the resonant frequency of the human eyeball which is around 19Hz for most people. Subject yourself to a strong 19Hz signal and watch your vision blur! Of course, that can't really be shown through a youtube video.
For the video you posted, something interesting that they could have done is show the cracks forming in the wine glass at very slow speeds in ultra-high FPS. That would have been really cool. The slo-mo guys could have fun with that one. One interesting fact about that that I learned recently: if you remember that old Memorex commercial where they show Aretha Franklin singing and breaking a wine glass- was that real, not staged. The advertising agency's legal team advised them not to stage that since it might open them up to false advertising claims. Of course, that had a lot more to do with the SPL vs frequency than recording, and any cassette tape can do that.