Mutharamkunnu P.O. is a Malayalam film directed by Sibi Malayil with Mukesh and Lizy in the lead roles. The movie was noted for the special appearance of famous Indian actor and wrestler Dara Singh. 2010 Hindi movie Kushti was inspired by this movie.
Kuttan Pillai (Nedumudi Venu) is a retired wrestler who loves boasting about the greatness of his career. Amminikutty (Lizy) is his daughter whom he wants to get married to a successful wrestler. Dilip Kumar (Mukesh) comes to their village as a postmaster and falls in love with Amminikutty. This outrages Kuttan Pillai who says Dilip has to win a wrestling match with his friend Dara Singh to get married to his daughter. Soon a wrestling match is organized and Dilip and Dara Singh get into a rib-tickling fight.
source