A phrase that was used by a random insane guy that he repeated over and over again as he beat up Dan Rather. Now it's basically used as an exclamation whenever something insane happens and people over-react to it.
"HOLY SHIT! MY CAT JUST FELL OFF MY ROOF AND KILLED MY GRANDMA!"-Guy 1
"HOLY SHIT"-Guy 2
"OMG! WTF! WHAT'S THE FREQUENCY KENNETH!"-Nihilist
The nyquist frequency is the number of times that a sound wave has to be sampled digitally in order to reproduce it accurately. The minimum is usually twice the highest frequency to be reproduced.