Another classic I have seen many times, including on the big screen and in play form.
Evil Dead 2 is meant to be a sequel to Evil Dead but it pretty much stands on its own thanks to a recap. A retail clerk named Ash has gone to a mountain cabin with his friends. While there, they accidentally unleash the Evil Dead by playing taped inscriptions from the Necronomicon. Ash was the only survivor of the first movie but soon, the rightful owner of the cabin and some hillbillies join him. He also has to contend with having his hand possessed and various other tricks the Evil Dead play on him.
My contention is always that Raimi didn't really mean for the first movie to be so funny. He was trying to make a horror movie and it came out super cheesy. So, for the sequel, he leaned into the cheese factor. Making the movie an intentional horror/comedy works wonders and it scores both laughs and intense moments. There is lots of slapstick and gore but it is all in good fun. It all comes to together pretty well.
If you are hesitant about the series, I would jump in with this one. The first Evil Dead is fine but this is the one everyone thinks of when they talk about how good the movies are. This was followed by the equally fun Army of Darkness.