

I believe the impact was mostly to do with the visuals. And, honestly, that is very fair. While it is inctedibly dull and cringe story-wise, the visuals are phenominal, especially since the movie is now already 15 years old.
I feel the same way about Jurassic Park in that sense, though it is much less cringe than Avatar (but still pretty basic story-wise).
It is an official word, but nobody uses it anymore in English. Same goes for ereyesterday (the day before yesterday)