Chachi 420 (1998) , a 1998comedy movie released on 12/19/1998 starring Kamal Hassan, Amrish Puri, Om Puri, Tabu, Johnny Walker, Paresh Rawal, Ayesha Jhulka, Nassar, produced by Kamal Hassan.
Desperation to be with his only child forces a divorced man to take the guise of the child's nanny. Situations get really messy when the child's grandfather (the man's ex-father-in-law) falls in love with his disguised ex-son-in-law.
The soundtrack features songs like Ek Woh Din, Chupdi Chachi, Bhaaga Sa sung by Rekha Bhardwaj.