Who would have thought that a story about Christopher Walken meeting one of the biggest rock bands on the planet would be so hilarious?

As it turns out, a lot of that hilarity is down to Dave Grohl's impersonation of the actor with Hollywood's most distinctive voice.

Walken was hosting Saturday Night Live back in 2002, when Foo Fighters were the musical guests - and if you don't crack up upon hearing Grohl's story about him asking how best to say the band's name, check your pulse.

Watch him telling Chris Moyles how things panned out below - and see the actual clip of Walken's introduction (where the band somehow managed to keep straight faces) below: