Metallica fans were treated to an appearance by the Foo Fighters before their show in Milwaukee on Tuesday night!
Comedian Jim Breuer was amping up the crowd before his opening set, walking around backstage with a camera crew, looking in dressing rooms. He opened one door — and there stood Dave Grohl and Taylor Hawkins from the Foo Fighters!
The Foo Fighters were in town to perform the following night. Watch the video below!