Earthhive, I admire your passion for the performances in Predator but as much as I love them they are not acting oscar worthy.
I believe Sigourney Weaver and Alec Guiness are the only one to achive an acting nomination for staring in a sci-fi movie. If I have missed someone then let me know but I'm sure its a small list.
Arnolds performance in Predator was good but not oscart worthy imo. The closest Arnold will ever get to an oscar is an honoury one for his life time work.
In regards to KPH, he was good but nothing special to deserve an acting nomination. Don't get me wrong, he did a great job but oscar nomination!? You got to be kidding me.