Television

I'm still not over Firefly. Or the Orville.

Mind hunter, surprised i didn't see it mentioned

Firefly

The answer is always firefly

Inside Job

Firefly

freaks and geeks. unbelievably stacked cast but the network never gave it a dedicated time so no one knew when they could watch it. then it got cancelled before they aired half the episodes citing poor viewership

The Expanse.

Firefly.

Pushing daisies was a hard pill to swallow. Such a great quirky show.

Firefly

Sort of counts, but KOTH.

Fox took it off the air FOUR episodes from the finale to "make room for The Cleveland Show" of all things, the worst offering from those Family Guy clones imho.

Luckily, Adult Swim was kind enough not only to pick up KOTH, but to air those last missing episodes as well, and I have it all torrented by now of course and it was easy to find, but still, fuck Fox for that one (amongst other things, but I want to punch the specific exec that decided to do that right in the eye just one good time.)

Better off ted.
Avenue 5.
Alien Nation.
My Name is Earl.

The OA

Better off ted.

Show was brilliant

Darkwing Duck, it ends with the first episode of a two parter...

Amazon: The Rings of Power.

Santa Clarita Diet and Carnivale. HBO axed Carnivale, Deadwood and Rome back to back, and I still hold a grudge.

Edit: Enterprise and Lower Decks also still sting. Lower Decks is ao fucking brilliant and I hate that no one watches it!

Firefly

Raised by Wolves

Better Off Ted

Last Man on Earth

• Utopia (UK)
• The expense

Teen Titans ended with a cliffhanger and then Cartoon Network put out Teen Titans Go! just to add insult to injury. Certainly the pettiest thing I've been angry about for nearly 20 years.

Tuca and Bertie. Netflix cancelled it, then HBO made another season. But just before releasing it HBO cancelled it for a tax break. It's heartbreaking to think of the writers and animators pouring their lives into it just for nobody to ever see it.

Limitless. It was just starting to get to the good shit when they cancelled it!

I was also upset by Star Gate Universe's cancellation. I hadn't been a fan of StarGate prior to its release. Seen a couple bits here and there but never just watched the show. After going through SG-1 and Atlantis, I can see why OG fans didn't like Universe. But I still think it was great on its own, as someone who knew nothing about the OG series when I saw it. But, if they do re-explore the same story and ideas, I'd want it to be the same campy shit that SG-1 was, instead of the serious tones Universe had.

In order that I remember them now

• Drive
• John Doe
• The OA
• Sense8
• Limitless
• Dollhouse
• Tru Calling
• Dark Matter
• My So-Called Life
• Witchblade
• Carnivàle
• Probably more, I'll add them as I think of them

Firefly would make the list, if I watched it while it aired. But I didn't see it till later.

All time? Freaks and geeks. Was becoming the quintessential coming of age show, had hard lessons that were from the point of real kids growing up. Each character was relatable in their own way, and should have gone on for years.

Second to that is Arrested Development. And yeah it was rebooted but the cast had moved on. The show was on a great role and was just ahead of its time. The episodic nature of it just wasn't popular then.

Travelers

Or

Stargate Atlantis

I'll never forgive Amazon for cancelling The Tick.

Terminator: The Sarah Connor Chronicles. I would have loved to see how they planned to resolve that cliffhanger.

Ugly Americans.

Scavengers Reign and Raised by Wolves

Kaos. That season 1 had me and my partner fucking hooked and they pulled the plug so fast it was hard to even finish it.

Final space

Firefly and Pushing Daisies are staples in these conversations, so I'll throw in a less common one: NCIS LA.

I watched that show for over a decade. It was something predictable and comfortable. The show ending was like losing my favourite hoodie I've had for 14 years. Does it really impact my life? No. Do I miss it nonetheless? Yes.

Raised by wolves. Atheism vs Religion into the stars. It was so good and so much of the buildup was about to come to fruition. GAH!

ReBoot. One of the most incredible, ground-breaking shows of its time, but it ends on a cliffhanger. I'm still holding out hope that we'll get a movie to tie up the loose ends someday.

V (2009)

Terriers.

Terrible name for a fun show.

A lot of good answers already. I'll add Santa Clarita Diet. It's a nice little show.