It was the band's second night at Los Angeles' Forum, and they invited the Jane's Addiction frontman to join them on stage for a few tracks like "Had a Dad" and "Been Caught Stealing."

Dave Grohl gave a moving speech about Farrell's influence on Foo Fighters' music, 'I can honestly say that we would not f--ing be here right now without this person,"� he said. 'This person is responsible for creating a movement and putting a fire under a evolution which eventually exploded and made my band and a lot of other bands come up into the mainstream and let people know what real f--ing music is all about. Because ladies and gentlemen, if it weren't for Perry Farrell we wouldn't be here right now. How many f--ing Lollapalooza's did you go to?"�