The Phantom menace pops to mind. Just that teaser with the gungans on their mounts, walking in the fog was enough to get every one on board for a new star wars series.
It wasn't a very good series, but it did lead to greater things and was a success by all accounts.
Took me about half a dozen viewings to come to terms with the fact that it's not great, but I still enjoyed the nostalgia of the release and the hype around it.
Everything except the Gungans was top notch. I still think the fight with Darth Maul is one of the best in the entire series. The music was SO fucking good.
I was 12 and I all I remember thinking was double sided lightsabers are cool. Which was disappointing as I was a huge Star wars fan. I don't think I really liked it that much but going to the movies was always a big deal.
i think its a flick more than a film. visuals and audio were impressive, but almost none of the characters were developed or charming or even quotable. it even somehow managed to be more racist than should be possible.