This is my idea of a perfect movie trailer. Doesn't give away too much and doesn't even show the dinosaurs much at all. JP was one of the biggest technological advances in recent movie history and I think they did a perfect job of not giving that away in the trailer. Instead it left people wanting more: YouTube - Jurassic Park First Trailer Thoughts? Also, what are some movie trailers you feel were very well done? Feel free to post bad ones too but if they ruin the plot please mention that as well in case people haven't seen the movies yet.