Haven't read the comics, but everyone says that The Boys tv show is way better

Invincible. The comics are great, but I think the show dramatically improves a couple characters

Buffy

Who framed Roger Rabbit and the Shining.

They Live.

The Thing but not The Thing From Another World.

Most things based on the work of PKD.

A lot of Lovecraft adaptations have to be a bit loose (because his stories tend not to lend themselves to films and he wasn't a good person) and are all the better for it - Re-animator, From Beyond, The Color Out of Space, Dagon, etc. plus quite a few fan films.

Flash Gordon film.

The first two Blade films - they struggle to make great Blade comics.

The Legion TV series.

"The Manchurian Candidate" isn't a great book.

Deep Space 9 is light years better than TNG.

Manhunter (1986)

In-A-Gadda-Da-Vida, baby.

I think the anime adaptation of Frieren: Beyond Journey’s End was genuinely better than the manga. Which is saying something, because the manga was already pretty damn good.

I think the TV series of Station Eleven is better than the book. Not that the book is bad at all, but the show is something else.

Yorkshire puddings.

The Ten Commandments

The Bocchi the Rock anime vs the Manga. The Manga is by no menas bad, but it is a 4 panel gag affair which has very little of the dynamism and weird jokes of the anime. I really want them to make more of it.

A Very Brady Sequel.

Foundation. The books are okay. But the show has better character, escpecially the empire side. Great visual, and more griping plot