I could not believe this when I saw it.
http://www.mach-es-machbar.de
(Even if he doesn't use an HP, he still deserves honorary membership)
--Peter
It's a famous fake.
A viral advertising campaign paid for by Microsoft.
LINK
Dave.
Evil, evil, evil!!
But still entertaining. :-)
IF he had known physics THEN he had chosen another water depth d;> The other parts looked more plausible. However, a nice video anyway.