That Dave Grohl, eh? If ever there was a multi-millionaire rock star who's also a man of the people, it's him.

The Foo Fighters frontman spotted a fan holding up a sign that said 'It's my 50th - let's have a beer' in the crowd during a gig in Michigan on Monday, and invited him up on stage to do just that.

"We’ve got a lot of songs we’ve got to play tonight," he said, perched upon the custom-made throne that supports his still-broken leg. "I’m gonna share this beer with you, and then I’ve gotta do my job."

Watch the video below: