Standing on the stage's sidelines, Novoselic repeatedly posted videos, pictures and opinions, exclaiming what a fantastic show Foo Fighters put on. He ended by calling Foo Fighters the "best band in the world."

His very first tweet grabbed a shot of Dave Grohl's rock chair, which the musician has been using since breaking his leg on tour. Grohl's attitude to keep on rocking despite the significant injury may have played a part in Novoselic's comments. Real rockers keep on rocking.