1. 'The Flash'
At its best, there's really no topping "The Flash." This series set the gold standard for the Arrowverse in its first season, offering fans a compelling mix of high-speed action, hilarious team banter and a deep dive into the tragic life of Barry Allen.
Unfortunately, the series has been locked in a gradual downward trend ever since. Season 2 was great, but not quite as strong as the first. Season 3 only picked up in its final few months. And while Season 4 finally shook up the formula by focusing on a villain who wasn't a speedster for a change, the result was still one of the weakest Arrowverse seasons to date.
Even at its worst, there's plenty to like about "The Flash." Grant Gustin
makes for a terrific Barry Allen, and we'll never not get chills when we hear the words, "Run, Barry, run." Still, the series has a lot of catching up to do before it leads the race again.