First is a movie that is... really really boring but the trailer is something ... just extra special.
http://www.youtube.com/watch?v=jy-zVlB4mvA

Next, is trailer for a movie that cost 65 million dollars to make. This is the trailer. Let's figure out where the budget went:
http://www.youtube.com/watch?v=uROQ9nplxIY

Finally... well ... it gives the what what song a run for it and may surpass it.
http://www.youtube.com/watch?v=3j4t185wl-0