This effect is great, but there are a few considerations:
-dvd is 58 minutes (could have been
25)
-if you have small hands or a very specific typeof hands, this won't fully work for you.
You get a "custom made" shot glass, it's not gimmicked, but it has a very specific property
to it that makes this work.
It's not supposed to be examinable, but it can if performed
correctly (what I mean is that it might give away the method if performed incorrectly)
Angles are pretty bad, but you can fix them with a little audience management.