This week, Nick Offerman—noted actor, humorist, author, woodworker, canoe paddler, and agrarian philosopher—talks about Willie’s 1968 song, “Buddy.” It’s likely an obscure title even to real-deal Willie nerds, but not to devoted fans of Nick’s old show “Parks and Recreation,” who should recall it as Ron Swanson’s favorite song. Nick’s going to explain why “Buddy” was chosen for a key moment in what he calls the show’s most important episode, and then he’ll describe the magic of his first Willie concert, the vital work of Farm Aid, and why he considers Willie Nelson one of the greatest Americans who ever lived.