15 Most Underrated TV Shows Of The Decade (So Far)

2. Constantine

The Show: Based off the popular Hellblazer comic book series, Constantine follows demon hunter John Constantine (Matt Ryan) as he attempts to bring down supernatural entities and ensure that these beasts are sent back from whence they came.

Why It's Underrated: Above all else, this really just feels like a show that few actually gave a chance. Reviews were mixed-to-broadly-positive, praising the faithfulness to the comic book vision of the character (certainly more so than in the terrible Keanu Reeves movie), while some criticised the somewhat generic feel of all the supernatural mechanics, which failed to distinguish themselves in a crowded field of paranormal action TV shows.

Despite bringing in over 3 million viewers for the majority of its first season, Constantine was cancelled after just 13 episodes. He made an appearance in Arrow, but that was small compensation; the show's become another cult hit axed long before its due date. With Ryan's steely lead performance and some surprisingly impressive visual effects for a TV show, Constantine deserved longer to find its place with viewers.