James Cameron is a filmmaker with many beloved projects, who is known for pushing the limits of what film and visual/practical effects are capable of. One of his most iconic movies is definitely "Titanic," which was a sensation that became the highest grossing films of all time. It also made a megastar of Leonardo DiCaprio, although Cameron recently recalled almost losing him for "Titanic," saying “you change one element and it doesn’t work.” Could we have gotten another king of the world?

"Titanic" was released back in 1997, when Leonardo DiCaprio and Kate Winslet were still young stars in Hollywood. But casting this pair wasn’t always a sure thing, namely because the "Romeo + Juliet" actor wasn’t sure he wanted to take on his most iconic role. James Cameron spoke to Deadline about this process.