i have thought on it, and i reckon that if you want to get 100% from the movie, don't watch the trailers. it doesn't *really* give away major plot points, but there are lots of jokes in there that are really awesome when you don't see them coming. also, for a fan, it's probably more spoilery than someone just going to see an action film, yaknow?

so, if you're wanting to get the most out of the movie that you can, don't watch the trailer.