I just Googled it and got 19,400 hits -- the first few pages were about this gag. Apparently KTVU has now taken down the link so now it can be only be seen on YouTube (and similar sites). Someone has also done a statewide search and there is no one by that name in the entire State of California. Most of the people are giving him kudos for keeping a straight face.
I also ran across this comment, which I thought was also funny --
>> Ah, that brings back school days where, when we had a substitute & an attendance sheet was passed around, someone would write "Dick Hertz" in the hope that the sub would, when calling the roll, say "Who's Dick Hertz" when they got no response.<<