Since debuting in 2014, The Flash has become one of the most popular superhero shows on television. Part of the CW's Arrowverse, the DC Comics series focuses on Barry Allen as the hero with super speed, and his fellow superpowered friends as they attempt to protect their city and the multi-verse.
In the eyes of most viewers, The Flash was at its peak during its first two or three seasons. Many feel that it has had its ups and downs since then. But which episodes are the best and which are considered the worst? We've looked at the ratings left by users on IMDb to see what they picked for each category.
10 Worst: Null and Annoyed (7.1)
If you want a sense of how strong The Flash is, look no further than this entry. It may be included on the "worst" side of things, but a 7.1 rating is pretty good. "Null and Annoyed" was the seventeenth episode of Season 4 and it mostly suffered from being kind of silly.
The main villain of the week was Null, who used her ability to manipulate gravity to make Barry float around like a balloon animal. Not exactly imposing, is it? A disappointment too, considering how cool the power is. The highlights of this episode were the guest appearance by Danny Trejo and the tidbit that Kevin Smith directed it.
9 Best: The Trap (9.4)
As noted, fans seemed to love the early episodes of The Flash. "The Trap" was episode 20 of the first season. It worked to help get the story to the season-ending climax. The fight against Harrison Wells was ramping up and Team Flash came up with a trap to capture him.
It involved putting Cisco's life in danger, which gave the episode the emotional core that it needed. We watched with bated breath to see if this fan favorite would survive. There was also a fair amount of drama surrounding Iris and Eddie, adding to the already high level of drama for this tremendous hour of television.
8 Worst: Harry And The Harrisons (6.6)
Get it? The title is like the movie Harry and the Hendersons. Anyway, this Season 4 episode was a huge victim of coming at the wrong time. In "Harry and the Harrisons," we watched as Harrison Wells struggled with his dwindling intelligence due to overuse of the Thinking Cap.
In an attempt to help him, Cisco introduced Harrison to the Council of Wells. As fun as it usually is to see Tom Cavanagh portray so many different versions of himself, this felt like overkill. And it happened at the tail end of the season. Instead of focusing on the important storylines, we got this filler episode.
7 Best: The Man In The Yellow Suit (9.4)
This got the slight edge over "The Trap" due to having more reviews. Here we have the ninth episode of Season 1. "The Man in the Yellow Suit" acted as the fall finale. It put the mystery of the Reverse-Flash front and center, which was a storyline that blew away the audience.
As great and intriguing as that tale was, it wasn't the only shining part of this episode. We got to see Caitlin deal with the discovery that her fiancé Ronnie was still alive. That set off the Firestorm arc, which became a key plot in the eventual DC Legends of Tomorrow series.
6 Worst: Duet (6.0)
It may rank near the bottom of the barrel on IMDb, but this is actually a highly divisive episode. Plenty of fans out there consider it to be a fun break in the action. Most of Season 3 was gloomy and dire, but the seventeenth episode "Duet" changed up the tone completely.
Barry (Grant Gustin) and Kara Danvers/Supergirl (Melissa Benoist) were both in this episode. They were sent to a world where everything was a musical by the Music Meister (Darren Criss). It allowed them to show off their singing talents from their work on Glee alongside Criss. It was a strange hour that may have been too different for some fans.
5 Best: Enter Zoom (9.5)
A vast number of fans seem to feel that Season 2 was the finest run of episodes in The Flash history. It's hard to argue that statement with entries like "Enter Zoom." Early into the season, the threat of the evil Zoom was already a huge problem for Barry and his friends.
This episode had a little bit of everything. There was a humor element early on. Great supporting characters like Patty Spivot (Shantel VanSanten) and Linda Park (Malese Jow) stepped up. Earth-2's version of the Green Arrow. A deeper backstory for Earth-2 Harrison Wells. And it was all topped by a showdown with Zoom that didn't disappoint.
4 Worst: Run, Iris, Run (5.4)
Like the aforementioned "Duet," this is a divisive episode. "Run, Iris, Run" was the sixteenth episode of Season 4 and it shined a light on a different kind of speedster. One of the bus metas had the ability to swap people's DNA with someone else. When they did so, it gave Iris her husband's powers.
Though it happened on short notice, Iris was given her own personal costume. It was cool for a lot of viewers to see her protect Central City. But as empowering as it was for some, it may have been too different for others. They seemed to want to see the Flash they knew and not someone else playing the hero.
3 Best: Fast Enough (9.6)
Great season finales are important. You need to wrap up a strong story with a bang and that's just what "Fast Enough" did for Season 1 of The Flash. Barry went back in time to the crucial night where his mother was murdered to save her. However, he ultimately decided against it in the final minutes.
That's enough drama for a finale but this episode didn't stop there. Barry had his big battle with Eobard Thawne, only for Eddie to shoot himself so Eobard is never born. That big twist changed everything. To top it all off, Barry chased down a wormhole threatening to destroy Central City as the season ended with a cliffhanger.
2 Worst: Girls Night Out (5.2)
In theory, "Girls Night Out" was a good idea. The women of the Arrowverse deserve all the chances to showcase their talent and putting them at the center of this episode should have worked. Iris, Felicity, and the ladies came together for one of the more fun adventures of Season 4.
But the episode got dragged down by the secondary storyline involving the guys. Barry, Cisco, Ralph, and others went to a strip club for a bachelor party and it just wasn't nearly as enjoyable as it could have been. This episode is a perfect example of a consistent Season 4 problem, which was an inconsistent tone.
1 Best: Out Of Time (9.7)
Episode 15 of Season 1 proved to be the best of The Flash, according to IMDb. It was the first to truly show us what the element of time travel could do to this series. Cisco figured out that Harrison Wells was the Reverse-Flash, leading to a brutal scene where Wells murdered him.
We also got to see the emotional moment where Barry and Iris declared their feelings for one another. Except it all got wiped out as Barry accidentally traveled back in time while trying to stop a tidal wave caused by the Weather Wizard. This had everything that makes The Flash click.