Absolute classic sci-fi/action movie and still stands up well today. Easily in my top five favourite movies of all time.
Fun fact, the inspiration for the film came from a joke that after Rocky IV, Stallone had run out of opponents on Earth. If they made another film, he'd have to fight an alien. Jim and John Thomas were inspired by that and wrote Hunter, which became Predator.
There are also so many stories about how Jean Claude Van Damme was once the Predator. Why that ended is up for debate? Maybe it's because Van Damme was ony 5'9″. Or it could have been because all Van Damme did was complain about the suit being so hot that he kept passing out? Or maybe the original design just didn't work. The Stan Winston redesign?
I'm a fan of Predator 2 as well, but the first film is absolutely the best of the franchise. The ultimate hunter against the ultimate soldier? It is what a sci-fi/action movie should be.