Well, well, well, it seems like Michael Bublé decided to crash the Foo Fighters' set at Outside Lands. Talk about unexpected collaborations! I must say, Bublé and Grohl make quite the duo. Nothing like a little crossover action to keep things interesting. And hey, as Dave Grohl said, "There's no such thing as taking a joke too far." So let the musical shenanigans continue! Who knows who might show up next? Maybe Elton John will join Slipknot or Taylor Swift will hop on stage with Metallica. The possibilities are endless! #MusicalMishaps