O Brother, Where Art Thou? VS The Alchemist

Well first of all the biggest similarity between the movie and the Alchemist is the involvement of treasure. Both the movie and the book mention the quest for a buried treasure. However in the Alchemist, Santiago actually found his treasure while in the movie the treasure is just a lie. In the Alchemist, Santiago found not only the treasure but also true love (Fatima). In the movie, Everett found his true love by winning his wife back.

Everett and Santiago both set out for their Personal Legend (for Santiago it is the treasure while for Everett it is winning his wife back). They both have been under lots of obstacles but by refusing to give up they overcome all those difficulty and finally achieve their dreams.