Same here. And if I remember correctly, there was one time I saw a preview for an episode of The Simpsons that featured a scene that for some reason wasn't shown in the actual episode. Boy was I disappointed.
I hated that they cut out the scene in the Dark Knight where the Tumbler does a hairpin turn inside that temporary base Bruce is in. Just irked me to no end because it wasn't in the film. YouTube - **NEW** The Dark Knight Trailer 3 At 1:41. The whole clip was on a History Channel documentary of Batman and it was just...amazing. Just a six second clip of the Tumbler starting up, doing an unbelievable turn and darting off.