This first video is simply a recap, as everyone knows about cup stacking and has seen this video...
...but it's the basis for the next one.
Now I know cup stacking is insane, that it takes an extreme amount of dedication, and is totally useless, but this next video blows it out of the water. Who comes up with this stuff? Bonus points for the soundtrack.
[Bonus EDIT] This is a surefire way to make sure you're never invited to parties. Bozo owes this man a lot of chedda.