Depp passed on acting as Titanic lead and later regretted it.
180-page script was too long for Depp.
Titanic became a box office hit, earning over $2 billion.
Depp wished he could recreate scenes in his bathtub.
DiCaprio and Winslet's performances in Titanic are iconic.
Depp and his ex-fiance Ryder almost starred in the film together.
The couple split before production, leading to their separation from the film.
The tragic love story of Titanic remains a classic film.