Dave Grohl says joining AC/DC for "Highway To Hell" left him in tears.

Foo Fighters opened for AC/DC at MetLife Stadium in New Jersey on October 2, and Grohl then joined the band onstage for "Highway To Hell" on guitar and backing vocals. Talking to Rog on New Zealand's The Rock, Grohl said, "I walked off stage and I broke down in tears, sobbing like a baby." He called it "one of the most full-circle moments of my entire life." Grohl was 11 when he saw AC/DC's concert film "Let There Be Rock" at a midnight screening in 1980, and he says that night made him want to be "that guy." He also said playing with them was "the loudest stage I have ever stood on in my entire life."

Photo: Matteo ACDC Abruzzo