Asklemmy

Dredd, highly praised by fan and critics; Also a recent one Dungeons & Dragons: Honor Among Thieves no buzz but high praise overall.

Mr Robot is a damn masterpiece and I don't think I've ever participated in or heard a verbal discussion about it. But whenever it pops up in a thread or comment section there's always tons of people giving it praise.

Blade Runner 2049. Extremely highly rated, just wasn't popular enough

Not enough people understand how great of a show Bojack Horsman was.

Better Off Ted is still my favorite sitcom. Corporate came along and tried to pick up the mantle, but I still prefer Ted.

I really enjoyed Equilibrium (2002). Is it derivative of 1984 and Fahrenheit 451? Absolutely. But so was V for Vendetta.

It's a B level film that still packs a punch today, particularly in a dystopian era of politics. The message of learning to connect continues to be relevant in a hyper connected, but shallow relational landscape.

Stargate. Had a long run with good viewership and multiple series, but has had very little cultural impact compared to trek/wars. Sg1 can stand up to any trek series

The Man from Earth is not forgotten, it has never been recognized. I've never seen such a great movie. The plot: a bunch of techers talking. That's it. But that talk is mindblowing.

Little Miss Sunshine

Hilarious indie comedy. I’ve never heard of anyone disliking it, but it also almost never gets brought up.

I'm going to throw out 2 series that were canceled early that I'm still salty about: The River that was on track to rival Lost in quality, and Terminator: The Sarah Connor Chronicles which is another case where Summer Glau got screwed. Lena Heady has said if SCC didn't get canceled, she wouldn't have gotten Game of Thrones, which hits a lot different now than 10 years ago when GoT was good.

HBO's Rome

That show had great scripts, great acting, and great visuals. I can't think of one area where the show had a serious deficiency. It was the quality of Game of Thrones before Game of Thrones. It just never caught on. I give it a rewatch once every few years.

RIP Ray Stevenson. 13!

Black books is brilliant and wildly underrated. Dylan Moran as a misanthropic book shop owner with an idiot for a sidekick

Star Wars Galaxies. It really was really lightning in a bottle. No other game has come close to recreating the social player-driven sandbox experience that was SWG. This was the first MMORPG I played to feature a classless build system and I haven’t played another game which does it quite as well. Honourable mention goes to the Jump to Lightspeed expansion, truly the coolest expansion for any game I’ve ever experienced. We will never be able to recreate the experience of SWG again, the culture of gaming has changed too much. It was a game where you simply couldn’t solo the entire game or hang around with a dungeon finder or anything like that. You had to interact with other people - you had to kick back and hang out in bars together, you had to ask someone to help you change your hair colour or style, you had to ask doctors to heal you, or tailors to make clothes for you in a style you liked, or settle for off-the-rack fashions bought from player-owned stores. Players would also take the role of bounty hunters to hunt down criminal players for credits. You’d get to know a lot of the people you shared a server with, you’d remember who was fun to team up with, or who saved your ass, or who gave you some buffs, etc. and it really made the experience unforgettable.

Deadwood.

I agree with the Mr. Robot take in this thread but nothing matches the infectious dialogue and energy that takes place throughout the entire Deadwood series. I never hear or see it talked about online or in my friend groups.

Time Bandits

Battlestar Galactica. What a phenomenal series.

Edit: the 00's series, not the original. That might be good, but I haven't seen it.

Peep show

I feel like Children of Men (2006) doesn't get much recognition for being a chilling view of a future world or the respect it should with it's amazing long takes and excellent camera work. If possible watch the behind the scenes material about the car rig they built. It's so cool!

The first few Splinter Cell games should have had a more-lasting impact on gaming. Proper stealth gameplay in which lighting mattered for the first time (revolutionary), and the Spies vs. Mercs multiplayer still ranks among my favorite multiplayer games of all time. Then they made it into a (still good, but not the same) action series before letting it die completely.

Orphan Black.

Intriguing show that entertained throughout, backed by one of the greatest acting performances I've ever seen in tv by Tatiana Maslany.

Anarchy Online. The first sci-fi MMO, it was basically an unofficial Dune Online when it first released. Lots of very cool concepts, and is one of the deepest MMORPGs out there - personally the only MMO I know of with more depth is EVE Online. There are mysteries about the game mechanics that the player base don’t have an answer to even 22 years after the game’s release.

Comparable to EverQuest, Asheron’s Call, Dark Age of Camelot and even Star Wars Galaxies, all of which have a pretty thriving server emulation communities, nothing like that has ever really materialised for Anarchy Online, and while the official servers are still running, it seems like it’s only a matter of time before they’re turned off once and for all.

If you want to check it out, you can play the base game for free as long as you like with no real downsides except lack of access to expansion content. It’s very quiet though, compared to the hay day, and the economy is hilariously broken, but still an interesting peek into 23 year old MMORPG design.

Death Note, specifically for non-anime folks. It's really the only anime that I think even anime haters can love.

While the quality is uneven, it's still the #37 show on IMDb last I checked, and most people have never even considered watching it.

No spoilers please, in case anyone who reads this decides to give it a try.

Also, Steins;Gate.

Beyond good and evil.

It's sales were poor but the reviews were great. A fantastic adventure game with a great story and a world that felt so incredibly lived in. It had a bunch of interesting mechanics that focused on stealth rather than confrontation.

Playing it now the scope feels pretty small but it's still a very tight experience.

Heroes. The first season was so damn good and then the last writers strike completely killed it.

Babylon 5. It’s not perfect by any means, but it’s a fantastic show, it was pretty popular back in the day, but since it ended it pretty much faded from memory for most people I think, compared to Stargate, for example.

Vinland Saga taught me that being kind makes me a stronger man and having no hate for anyone, even those who have wronged me will make me a happier person.

It definitely did make a very big impact on many people, and it's where all the "i have no enemies" memes originate from. But I do wish It had an even larger impact than it did as it's an answer to the constant fighting and arguments that has taken over many of our lives.

There was a string of time between 2006 and 2009 where there were AMAZING new long format TV shows coming on... and promptly dying on the vine after a year due to bad advertising or ratings chasing.

Kings was a great TV show that deserved 4 more seasons.

Jericho Was an amazing show, that got dumped by Network after the first season.. and the fans were so infuriated that they crowdsourced funding to send over twenty tons of nuts to CBS in protest, Which forced them to greenlight a second season for like..5 or 6 episodes (first season was 22 episodes, as comparison) and left it hanging on a painfully huge cliffhanger. before cancelling it again.. Netflix even came forward and offered to buy the series and continue it on Netflix (Which all the actors were 100% on board with), and as a final FUCK YOU to the fans, CBS refused. They hated the show, tried to fuck over its second season hard, and hated the fans... and still refused to sell the rights to someone who would let it flourish.

God, typing this out has made me realize how irrationally angry I still am at CBS over the absolute fuckery they pulled with that show that I cant even think of the other shows at the moment.

Go watch Jericho. Its still a fucking awesome show, despite how much the c-suite hated it.

Game Cube- Eternal Darkness

I’ve said it before and I’ll say it again,

The Knick

Only two seasons and it ended before it ever had a chance to get bad. The acting is phenomenal, sets are well designed, the background music choices are very unique for what you would expect in that time period. But it works! Cannot recommended it enough! If you can find it or “acquire” online I think it would be worth your time.

Person of Interest - it not only anticipated NSA mass surveillance (with some SciFi elements but anyway) but also ethical questions about AI, the singularity of human intelligence and human nature in general. All while being a well told crime show with comedic and heartwarming moments.

Great question btw, OP

All the damn Holocaust documentaries.

Network wasn't underrated but has felt more relevant every decade but has been talked about less and less.

Showgirls tells a compelling story about poverty, fame, power, misogyny, and abuse. This film is severely underrated but also it is forgotten by most people who do not go looking for the lowest rated movies to watch ironically.

The second season of Ghost in the Shell: Stand Alone Complex was really good and I find the story centered around a refugee crisis to be a much more compelling one. I feel like this season gets talked about less than the first and the movies, which are generally seen as masterpieces.

You didn't list books but I wanted to mention that Player Piano is one of the most precient books I have read and was written back in the 50s. Vonnegut is of course a well known and regarded writer but you'll rarely see his first novel topping lists even among just his own works, and so it doesn't get read and discussed as much as it should.