With its awe-inspiring spectacle, relentless thrills, and engrossing ability to mix excitement with tension, action is one of the most popular and successful genres to have ever graced the screen. When thinking of action, many envision blockbuster, cinematic events starring the likes of Bruce Willis and Arnold Schwarzenegger. However, the genre has quietly been excelling on the small screen for decades, with action lovers blessed with options aplenty when they turn their attention to TV series.