Based on the first two episodes, this is worth continuing with. Timothy Olyphant plays Raylan Givens, a US Marshal who is quick to draw his gun, and for whom the parallels with the role of a marshal in the early West still seems relevant. Early in the first episode he is posted back to Harlan County, Kentucky, where he grew up, and the rest of the series appears to take place there. Givens is based on a recurrent Elmore Leonard character, and Leonard is credited as an executive producer.
Part of the pleasure of the series is seeing Olyphant reprising his role as Seth Bullock, but with far more enjoyment than he showed in Deadwood. In that show he was one of the weakest characters: all repressed fury without a hint of irony. But in Justified, Olyphant is far more relaxed, with an easy smile and a sly sense of humor. There is menace when he threatens a suspect, but it is always delivered gently.
But the real reason to watch this is the locale in which it takes place. This is rural Kentucky, and the show displays a real sympathy for the ex-coal miners and the assorted losers who populate the trailers and shacks that litter the show, even when those same people become Nazi thugs, or small time thieves. In each of the first two episodes the audience is invited to develop some empathy with those on the wrong side of the law. And there are some lovely touches that bring out the clash of worlds, for example a prison bluegrass band performing at a birthday party held at an exclusive country club.