“South of Heaven, West of Hell” (2000) is a strange adult Western featuring Dwight Yoakam, who also directed and wrote the script. He’s known for his music career but has had some acting roles previously, like in “Sling Blade.” Here, he takes on the lead role alongside a cast including Luke Askew, Vince Vaughn, Paul Reubens, Peter Fonda, Bo Hopkins, and Matt Clark. The story follows a marshal in southern Arizona (Yoa…