Willie Nelson is set to join the madcap Jackass crew for a new treasure hunt movie.
Johnny Knoxville has recruited the grizzled country legend for new movie Mustache Riders, which will also star Bam Margera and Ryan Dunn.
It's not the first time Nelson and Knoxville have teamed up for a film project - they were co-stars in 2005's Dukes of Hazzard.