It was pretty cool. There's a lot of little things that some people don't notice the first time around. On our way out we got to talk to one of the drivers. She was really nice and told us some interesting things about the cars.
I think the funniest part was the "RC" car. The little girl that got picked to go down was really shocked when the car started moving on it's own. Completly surprised.
I definatly wouldn't wait over an hour to see it, but I would watch it again. This last september trip was the first time we did Soarin and LMA, and I don't think either would've been worth the hour or so long wait when the attractions first opened.
Of course everytime we go, we try to do the attractions we missed the last time. And then hop on all our favorites.