Within the past decade, the middle-aged action hero has become an increasingly popular entity in movies. Ever since Liam Neeson shot and punched his way to action film fame in 2008’s Taken, the genre has seen an increase in actors over the age of 50. It’s not a bad thing, it’s just a curious thing and film audiences are in for another example of this in The Gunman, a lackluster actioner starring a 53-year-old (but still excellent) Sean Penn. It’s a movie that doesn’t offer anything new but features a pretty impressive cast. Sadly though, the actors can’t save this film from mediocrity and that’s a real shame because there was some real potential here.