The first weeks grosses might have been slightly inflated(not more than a couple million) due to Star Wars fans, but I bet nobody left after the trailer, like the reports I heard when it was if front of Meet Joe Black. The Incredibles made $50 million its second week. That definitely was not from Star Wars fans going to see the trailer. Incredibles is a great movie for families who are starved for wholesome entertainment. That is why it is making so much money. I don't remember any Star Wars references, but there was a chase scene that reminded me of the bike chase scene in Jedi.
By the way, Raising Arizona, Life Less Ordinary, and O Brother Where Art Thou are Holly Hunter movies that are definitely worth renting.