Last night’s Tonight Show may have been Fallon’s most musical to date, as not only did he recruit The National to perform, but Russell Crowe also picked up a guitar for a performance. Crowe, who is out promoting his new movie Noah, delivered a version of Johnny Cash’s “Folsom Prison Blues” along with The Roots and Fallon on harmonica.

The Gladiator star’s musical pedigree is quite impressive, as he once sat in with Keith Urban for Steve Miller Band’s “The Joker” as well as “Folsom Prison Blues” in Vancouver. Crowe also formed two bands in his native Australia, 30 Odd Foot of Grunts and The Ordinary Fear of God. The latter is technically still active today, with their latest work coming out in 2010.

Moving onto the official musical guest for the show, The National did their thing, much like they’ve been doing all month. The band has performed on SNL as well as this year’s Tibet House Benefit Concert. Through all that, Matt Berninger even found time for a little comedic relief. Watch the replay of the Trouble Will Find Me cut “This is the Last Time” as well as Crowe and Fallon doing Johnny Cash.

Russell Crowe, Jimmy Fallon, The Roots “Folsom Prison Blues”

The National “This is the Last Time”