The Foo Fighters in the past few years have shown that you truly never know what to expect at one of their shows. From performing Rick Astley's "Never Gonna Give You Up" to actually bringing out Rick Astley at a recent show, Dave Grohl and The Foo's are always surprising.
The other night at Jones Beach in NY, they did it again bringing out John Travolta and doing their rendition of one of the songs made famous in "Grease".