TV Guide has a nice interview with Jim Beaver here, where he talks about his television shows and his new book, Life’s That Way, about his wife’s cancer.
See how great he looks in hats?
So, to sum up. He's a great actor, an author, and a nice person. And can rock a hat.
To the show-runners of Supernatural and Harper's Island: if you kill his characters, I might consider breaking up with you. You have been warned.