Visiting Pearl Harbor and paying my respects at the Arizona Memorial are my top reasons for wanting to go to Hawaii.
On a related, but less somber note... If you haven't seen the movie "The Final Countdown," give it a watch. You can stream it for free on Netflix right now. The aircraft carrier U.S.S. Nimitz is transported back in time to December 6, 1941, and is in a position to prevent the sneak attack on Pearl. If you like ships, guns, and jet fighters -- it's a fun movie with a little bit of history thrown in.