Band continues celebrating album's 20th anniversary with 'Korn TV 2.0' series
Aaron Gillespie says clip "is a glimpse into what it's like to feel alienated"
Triumphant clip comes ahead of expanded edition of 'Gravity'
Professor David Soren: "Locally, they're calling it the 'Vampire of Lugnano'"
Clown: "It really is going to be a moment in our history"
Dave Grohl lent young musician his own guitar for impromptu performance
Members of Deftones, GWAR, Kyng, Hellyeah and more also appeared as part of all-star set
Cave In, Old Man Gloom, Pelican, 27 also played The Wiltern in honor of beloved musician