Edit: Just changed the title a little to focus on less well known films. It doesn't have to be something nobody has heard of, but presume I have seen all the big/well known films (Terminator, Total Recall, Planet of The Apes, Aliens, Matrix...you get the drift). Thanks
Any suggestions as to good (better still, excellent) Sci-Fi films, preferably pre-2000s. I admit to being rather less than impressed with the genre when it is on film, compared to book form. No need to suggest any of the very obvious stuff, i.e Bladerunner (which I found dull tbh) and The Fifth Element (a good film, but not very Sci-Fi imo).
I would usually say the weirder the better, but there are definitely limits. I did give the original Russian Solaris a try. At first I thought it was excellent, but I was waiting for something to happen, something that tied it all together, but I just ended up baffled and bored, so turned off before the end.