Barbarosa is a western starring the unlikely screen team of Willie Nelson and Gary Busey. Nelson is an outlaw, Busey his country-bumpkin buddy. They decide to ride together, since both are on the run from separate family feuds. Directed by Australian filmmaker Fred Schepisi, the screenplay for Barbarosa was written by William D. Wittliff who would later gain acclaim for his adaptation of Larry McMurtry's Lonesome Dove.
~ Hal Erickson, All Movie Guide