Kevin Spacey was chosen for the role of Eugene Simonet in the film "Pay It Forward" due to his exceptional acting talent and ability to portray complex characters. In the film, Spacey plays a teacher who has a significant impact on the life of a young boy, played by Haley Joel Osment.

Spacey's performance is often noted for its depth and nuance, which aligns well with the character's troubled past and his role as a mentor. His ability to convey vulnerability and strength made him a fitting choice for the role. Additionally, Spacey's established reputation in Hollywood and his previous accolades likely contributed to the casting decision.

The film, released in 2000 and directed by Mimi Leder, focuses on themes of kindness and the ripple effect of good deeds, making Spacey's character pivotal to the story's message.

If you would like to know more about the film or Spacey's career, feel free to ask!