Had not watched this movie since probably sometime in the 90's... and I do not remember thinking it was great at the time.
But watching it now, wow, it is a horror classic. Loved it this time around.
The 70's were a great time in horror, so many classics came out. Black Christmas, Halloween, Texas Chainsaw Massacre, The Omen, The Exorcist, Dawn of the Dead.. and I would say Phantasm deserves a mention with them.