Below is the trailer to the 1974 Saul Bass movie Phase IV. I seem to remember watching this many years ago when I was ploughing through the 'greats' of the sci-fi film genre. I also vaguely remember it being quite boring. However, now my interest in 70s psychadelia has been awakened, I am awestruck by the trailer and really appreciate both the visuals and analogue decay of the footage.
Bad memories or no, I must look into getting hold of a copy.