Foo Fighters + Led Zeppelin = The Best Day of Dave Grohl's Life

So, the other day when Foo Fighters headlined Wembley Stadium in England (that's 86,000 people, mind you) Jimmy Page and John Paul Jones showed up for the encore. The supergroup performed Led Zep's "Rock & Roll" -- with Grohl on drums and Taylor Hawkins singing -- and "Ramble On."

I waited to post this stuff until high-quality video footage surfaced -- and boy, has it. Here's a clip of Grohl introducing the band, looking like a kid on Christmas, followed by fantastic audio taken right from the stage of "Rock & Roll." After the jump, check out high-quality "Ramble On."

Foo Fighters will be at the Scottrade Center on July 20 with Supergrass, while Led Zep's Robert Plant will be at the Fox next week, June 19, with Alison Krauss.

Intro & "Rock & Roll":

More "Rock & Roll"

"Ramble On":