RARRG U HEARD ME Austrian Death Machine "Get To The Choppa" (http://www.youtube.com/watch?v=tPIO86jTrQQ#normal)
Link's Retarded Day (http://www.youtube.com/watch?v=JJnPL24szpE#normal)
Again I will respond to your video with a video.
The similarity is made at 1:44 but the whole thing is just a great example of the greatness of Gmod.
Get to da choppa! (http://www.youtube.com/watch?v=Xs_OacEq2Sk#normal)
I'm not really much of a heavy metal fan, and this was also a little disturbing.