Peter Jackson's KING KONG... Don't know how good the movie is gonna be (since I haven't read up on any of the reviews yet), though visually it looks like a cross between Jurassic Park and Titanic (don't get me wrong I like Park. And, um—cough, cough—Titanic), but the posters sure are awesome. I think these two are the best ones:
EDIT: King Kong is currently at 95% on RottenTomatoes.com. As usual, Slant Magazine is the lone dissenter in giving the film a negative review.