Norah Jones has shared on YouTube the video of her and Dave Grohl performing "Razor," off the 2005 Foo Fighters album In Your Honor.
It's taken from the latest episode of her Norah Jones Is Playing Along With podcast. The two also did the song from that album that featured Jones, "Virginia Moon," but to date there's never been video of the two of them performing it. The other Jones-Grohl duet you can find on YouTube is when they sang "Maybe I'm Amazed" in tribute to Paul McCartney at the 2010 Kennedy Center Honors.