I've removed the duplicate thread of this.
As for my thoughts.
Halloween definitely stands the test of time. I still watch it every October and love it every viewing.
My reasons for this are difficult to explain as films like this,
Texas Chainsaw, Zombie, The Thing, etc have a certain feel, a certain mojo with them that is impossible to reproduce nowadays. It's almost too simple - lingering camera shots, subtle, yet haunting memorable themes and classic monsters that are now a part of film history and can never be bettered.
If it didn't stand up and nobody watched it then it wouldn't be on tv every year nor would it's sequels. It must always rate highly on the audience appreciation index as well.