Korean / Japanese invention: How to Unclog a Toilet | Jammed Toilet Unclogged
I am not sure if I would trust this invention. It seems clever, but messy. After you use it, you are going to be left with a plastic cover that you have to peel off, probably leaving residue on your toilet rim and one side being covered in dirty toilet water.
A plunger still seems much more clean and efficient that this. Of course, our Rancho Cucamonga plumbers can fix any serious clog quickly and cleanly ;)