Rose doesn't die at the end, and the final scene is a dream, not the afterlifeShe mentions at some point that Jack "exists only in her memories", and this could perhaps be a reference to that statement, with him being in her dream. Also, since Cal committed suicide due to the stock market crash and did not die on the Titanic, it wouldn't make much sense for him to spend his afterlife there, having a good time with everyone else, especially considering all the horrible things he did on that ship.
Rose's father was just like Cal, personality-wiseIt is heavily implied that Rose wants to break out of her upper class lifstyle in general, not just to get away from Cal. One of the reasons for this is that Rose's own father was also controlling, domineering and abusive and to go from being treated so badly by him to being treated the same way by Cal is the proverbial straw that's broken the camel's back. And like Cal, the elder Dewitt Bukater committed suicide when he went into debt and lost money. Jack is clearly different from anyone else Rose has ever known in terms of his passion and free-spiritedness which is precisely why she finds him so attractive.
Cal actually committed suicide because he realized Rose had survived TitanicRose tells Lizzie and the others that Cal commited suicide in 1929 shortly after the stock market crash. Rose had worked as an actress during the 1920s before starting a family, according to Lewis. Cal really shot himself because he saw one of Rose's films, or plays (we don't know if she was a film or theatre actress), realized that she actually survived the Titanic disaster after all and was so shattered by the fact that she was apparently living a happy life without him that he couldn't live with himself.
Jack was a Fish Out of Temporal WaterNo previous records about him? Check. Anachronistic attitude and haircut? Check. Interested in things that weren't popular then? Check. Lived his childhood next to a man-made lake in Wisconsin that wouldn't be built for another three years? Check. Evidently, Jack was a time-traveler from The Future that ended somehow in 1912 Europe and was making his way back to America where presumably his time machine had been left. Why didn't he know the Titanic would sink? Because it didn't in the original timeline. He and Rose caused the disaster when they distracted the lookouts with their night kiss by the bow.
Jack was sent back in time with the express purpose of saving RoseIn the year 2035, humanity has been ravaged by a genetically engineered disease. Scientists have access to a time machine, but having failed to stop the bioterrorist(s) that first started it they go for the Plan B: Ensuring that the female offspring of the only inmune individual, a woman known as Ruth deWitt Bukater that died in the 1930s, live to see the modern day. Young convict Jack Dawson volunteers to the mission of travelling back to 1912, stop Ruth's daughter Rose from committing suicide from jumping off the Titanic two days before the sinking, make sure that she boards a lifeboat during the sinking and, just to be sure, to seduce and impregnate her. Jack will secure his own survival by clinging to the poop rail as the ship goes down and boarding a piece of floating wood that central control knows will pop out after the ship goes down. Unfortunately, Rose has an idiot moment and decides to go back on board as the ship goes down. Jack has then to craft a new plan and give her his spot on the floating wood, sacrificing himself for her and the Future of mankind. Although he might have failed to impregnate her, his action and his speech to encourage her to have a long life and lots of grandsons was successful: her inmune offspring reached the late '90s, and so a cure could be created and humanity was saved.
The guy from the search crew is right and Rose is lying.Rose Dewitt Bukater actually did go down with the ship, and Jack Dawson never existed, hence the story of the card game. Rose Dawson Calvert, a failed actress, had always been interested in the Titanic. Realizing that she was a dead ringer for the girl who died on the ship, she stole a name that would suit her and made up an elaborate story for how she came into possession of the necklace (which is actually a clever fake) for one last attempt at fame and fortune. Eventually she decided that her fake necklace would never pass for the Heart of the Ocean under close inspection and threw it away. That night, she had a dream about the Titanic and imagined what it would be like to be the deceased Rose Dewitt Bukater in heaven with Jack forever. In actuality, Jack was a figment of her imagination, and the real Rose died for unknown reasons.
Jack doesn't die at the end...He becomes Aquaman! using trick he had learned while studying with Tibetan Monks. Counting this in addiction with the guesses above that he was a time-traveler, when he slipped into the water, he traveled to another time because he set his time-machine to send him back when he completely submerged and unconscious. OR, he survived and kept and the Heart of the Ocean to make enough money to build his own fortune for ten years, and finding another woman who also has a flower for a name, to become Jay Gatsby, who has a notable fear of swimming pools.
Rose was a self-serving sociopath...She meets Jack and suddenly doesn't care about Cal any more and doesn't care that this affects her own mother. Later, when she's floating on the hunk of wood, she doesn't even bother to let Jack share the wood with her. Instead, she makes him float in the freezing water. They exchange words about never letting go, but she only hangs on for a few minutes before letting him sink into the ocean without even checking his pulse. Finally, in the end, she drops that necklace into the water when she could have given it to any number of deserving people, including her daughter.
The famous pair of boots found by the Titanic's wreck belonged to Jack.Do a Google Image Search for "Titanic Boots". There's a famous photo of a pair of boots right next to each other that seem to resemble the pair that Jack wore in the film.
Rose does die in the end, and goes down and meets everyone as per the end of the movie. Then it turns out that all those souls can't "move on" and are trapped on the wreck, needing to be Rescued from Purgatory.
Rose got pregnant with Jack's baby.Her granddaughter has inherited Jack's blond hair.
Mrs Pennyworth is...Alfred Pennyworths Mother
The bullet the Master-At-Arms is seen rolling down the table is his totem.He's hoping against hope that he's just stuck in a dream.
The Heart Of The Ocean has the power to grant wishesAboard the research vessel, Rose learns from Brock Lovett that part of Le Cœur de la Mer's elaborate, mysterious history involves a legend that it will grant the wish of the person who returns it to the ocean. Rose ultimately does, and wishes to be reunited and restored with Jack and all the voyagers in the unsunk Titanic, to all exist happily ever after.
Lovett's backers were aware of the above, and wanted it for its magical power rather than its monetary value"Everybody who knows about the diamond is SUPPOSED to be dead... or on this ship". That emphasis is a bit sinister, don't you think? The expedition was funded by a Nebulous Evil Organization planning to use the diamond for its own villainous purposes. (For crossover-y fun, imagine they were the evil organization from your favorite period-appropriate work.)
Rose is a time travellerThis troper is basing her theory off of the fact that Rose and Jack directly cause the sinking of the Titanic by distracting the iceberg lookouts. There is a moment in the movie where Rose is at afternoon tea and she looks at a little girl folding a napkin daintily, and right afterwards she seeks out Jack, and they have their famous kiss on the bow of the ship. What the movie DOESN'T show is that when Rose looks at the little girl folding the napkin, she is actually resigned to a life with Cal. She never speaks to Jack again, loses track of him, the ship doesn't sink, and lives her life as a very wealthy but unhappy woman. Because many important and wealthy investors in steam technology survived the maiden voyage of the Titanic, steam technology booms and eventually, many decades later, some kind of time rewinding technology is discovered. When she is much, much older, Rose realizes her mistake in letting Jack go (heh), and so she uses this technology to rewind time back to the pivotal moment where she watches the girl fold a napkin and chooses Cal (though she retains her memories of her future life so that she can choose correctly this time). This time, she finds Jack and tells him she's changed her mind. Unfortunately, her giddy and blissful romance with Jack doesn't last long, because after they make love, they distract the iceberg lookouts, thus causing the sinking of the Titanic. Jack doesn't survive, of course, but neither do the investors in steam technology, so the time-rewinding technology never develops, and she is forced to live another 80+ years without him, making the movie doubly tragic.
Jack is a Terminator.His mission was to protect Rose from her Fiance. He fell in love with her, and the frozen waters that killed him merely short circuited him. Evidence: 1. There has been no record of his name in any of the logs. 2. His sinking in the water Mirrors, The T800 sinking in the lava. 3. Rose hit his hand with an Axe and it didn't cut him. 4. It's James Cameron.
Rose is an Unreliable Narrator.She hangs out with both the ship's designer and the Titanic's most famous survivor. The characters are all thoroughly one-note - especially her fiance, who briefly turns into a murderous psychopath. Rose displays astonishing foresight - for example, she's familiar with Freud and appreciates Picasso. Everything makes more sense if she's telling the audience a historical fanfic.