Jack Nicholson, born on April 22, 1937 in Neptune, New Jersey, was raised believing his grandmother was his mother and his mother was his older sister.

The peculiar family situation was a product of the conservative environment of 1930s America. This revelation came to him only in his 30s.

Nicholson showed an early interest in acting and began performing in school productions, showing remarkable talent.

Later on, he took a job as a messenger for animation legends William Hanna and Joseph Barbera at the MGM cartoon studio.

Nevertheless, his passion for acting persisted, and he soon found himself in Hollywood seeking opportunities in the film industry.

Nicholson's breakthrough came with the film "Easy Rider" (1969), where his performance earned him an Academy Award nomination.

From then on, Nicholson's career skyrocketed. He gave memorable performances in films like "Five Easy Pieces" (1970) and "The Last Detail" (1973).

His success continued with his role in "One Flew Over the Cuckoo's Nest" (1975), which won him his first Academy Award.

Nicholson continued to gain worldwide recognition for his roles in films such as 'The Shining' (1980), 'Batman' (1989), and 'A Few Good Men' (1992).

He won his second Academy Award for 'Terms of Endearment' (1983) and a third for 'As Good as It Gets' (1997).

Despite his illustrious film career, Jack Nicholson has always managed to maintain a relatively private personal life.

Nonetheless, he has been romantically linked to several high-profile women, including actress Anjelica Huston.

Nicholson has five children from different relationships. He never married but shares a close bond with his children.

Apart from acting, Nicholson is known for his love of the Los Angeles Lakers and is often spotted courtside at their games.

He's also an avid art collector, with a collection that includes works by Picasso, Matisse, and Modigliani.

Nicholson semi-retired from acting in the 2010s due to memory issues, but he remains a revered figure in Hollywood.

He has left an indelible mark on the film industry with his captivating performances and off-screen charm.

Over his illustrious career, Nicholson has amassed over 60 film credits, making him one of the most enduring actors of his time.

He's also been nominated 12 times for an Academy Award, making him the most nominated male actor in the Academy's history.

Nicholson is also one of only three male actors to win three Academy Awards, and one of only two actors to be nominated for an Academy Award for acting in every decade from the 1960s to the 2000s.

Moreover, Jack was awarded the Kennedy Center Honors in 2001, which speaks volumes about his contribution to cinema.

In 1994, he was awarded the Cecil B. DeMille Award for his "outstanding contributions to the world of entertainment".

Furthermore, he received the AFI Life Achievement Award in 1999, reflecting his immense impact on the film industry.

In his personal life, Nicholson is known for his jovial personality and charismatic presence. His fans find him exceptionally charming and personable.

Despite his super-stardom, he has always been humble and down-to-earth, making him popular not just among his fans, but also among his peers in the film industry.

In conclusion, Jack Nicholson's fascinating life and remarkable career have made him a true legend of Hollywood. His name is synonymous with prolific acting and charismatic appeal.