It's on TV every year around Christmas, so most people from my generation watch it at least once a year.
One thing I noticed last Christmas was that the movie is indeed pretty much perfect, which is a weird thing to say, I know, but the pacing is impeccable, and what struck me the most the last time I saw it was that the plot is VERY tightly written. No holes, no deus ex machinae (well, maybe the spider, but who cares), no unnecessary crap.
It was also made during the golden age of movie localization in my country, so even the local overdub holds up wonderfully.
EDIT: I owe you guys an example: John Candy's character in our version is called Polak Romanski. I didn't get it when I was a kid, but it's one of favorite things about the movie now.