Hum Aapke Hain Kaun...! [translation: Who Am I to You?] is a 1994 Hindi film directed by Sooraj Barjatya, and produced by Rajshri Productions. It is a remake of Rajshris earlier movie Nadiya Ke Paar . Hum Aapke Hain Kaun is considered to be one of the most successful hindi films ever. The film is a story of two Indian families and the relationships between them, celebrating Indian culture using modern production values. It is noted for its lavish depictions of North Indian wedding ceremonies. Its soundtrack, including an unusually large number of 14 songs, was scored by Raamlaxman. Hum Aapke Hain Kaun stars Salman Khan and Madhuri Dixit, two of the top Bollywood stars of the 1990s. The film was very influential and inspired young filmmakers such as Aditya Chopra and Karan Johar. It was dubbed into Telugu as Premalayam. Madhuri Dixit won the Filmfare Award for Best Actress and was also nominated in the same category for her critically acclaimed performance in Anjaam which was released that same year.
The story was adapted from the film Nadiya Ke Paar  also made by Rajshri Productions. It tells the story of two lovers, Prem [Salman Khan] and Nisha [Madhuri Dixit] who are very fun loving, cheerful and full of mischief. Prems elder brother, Rajesh [Mohnish Behl], is to be married to Nishas elder sister, Pooja [Renuka Shahane]. Prems uncle [Alok Nath] and Nishas parents [Anupam Kher and Reema Lagoo] were college friends and when they meet, they arrange Rajesh and Poojas marriage. During the marriage a lot of fun and mischief happens until it is time for Pooja to leave to her new home.
Prem gets along well with his sister-in-law, and soon they discover that Pooja is pregnant. Poojas parents are unable to come to the ceremony marking the arrival of the baby so they send Nisha instead. While she is there, she and Prem fall in love with each other. Later, Nishas parents come over to Poojas house for a few days and when they have to go, everybody persuades them to stay over for a day. Then when the day for them to leave comes, everybody is sad, especially Prem as he has become very close to Nisha.
Then one day Pooja goes to stay at her parents house and Prem follows her there. Once they reach the house, Pooja finds out that Prem and Nisha love each other. She promises to get them married and gives Nisha the family necklace. Then the phone rings and Pooja goes to answer it. She is very happy and is hopping down the stairs when her foot accidentally slips and she dies after falling off the stairs. Everybody is sad about the accident. Nisha takes good care of Poojas child and everybody thinks that she will be a great mother to the baby and so Prems father and Nishas parents talks about a marriage between Rajesh and Nisha. Nisha overhears her parents talking about her being the daughter-in-law of the house that her sister was from, and she mistakenly thinks that she is getting married to Prem. Later at a preparation ceremony, she finds out that she is marrying Rajesh.
Prem and Nisha agree to sacrifice their love for Rajesh and the baby. At the wedding, Nisha gives Tuffy [Prems dog] the necklace that her sister had given her together with a letter, to pass it to Prem. Tuffy gives the necklace and letter to Rajesh and he realises that Prem loves Nisha. In the end, he confronts them and Nisha and Prem marry each other.
*List of highest-grossing Bollywood films
| Track # || Song || Singer[s] || Duration
| 1 || Maye Ni Maye || Lata Mangeshkar || 4:21
| 2 || Didi Tera Devar Deewana || Lata Mangeshkar, S. P. Balasubramaniam || 8:01
| 3 || Mausam Ka Jaadu || Lata Mangeshkar, S. P. Balasubramaniam || 5:01
| 4 || Chocolate Lime Juice || Lata Mangeshkar || 4:29
| 5 || Joote Dedo, Paise Lelo || Lata Mangeshkar, S. P. Balasubramaniam || 4:35
| 6 || Pehla Pehla Pyar || S. P. Balasubramaniam || 4:25
| 7 || Dhiktana [Part 1] || S. P. Balasubramaniam || 5:19
| 8 || Babul || Sharda Sinha || 3:44
| 9 || Mujhse Juda Hokar || Lata Mangeshkar, S. P. Balasubramaniam || 6:01
| 10 || Samdhi Samdhan || Lata Mangeshkar, Kumar Sanu || 5:50
| 11 || Hum Aapke Hain Koun || Lata Mangeshkar, S. P. Balasubramaniam || 3:58
| 12 || Wah Wah Ramji || Lata Mangeshkar, S. P. Balasubramaniam || 4:14
| 13 || Lo Chali Main || Lata Mangeshkar || 2:54
| 14 || Dhiktana [Part 2] || Lata Mangeshkar, S. P. Balasubramaniam, Udit Narayan, Shailendra Singh || 8:08
Hum Aapke Hain Kaun is one of the biggest grossers ever in the history of Hindi cinema. Made on a budget of around Rs. 60 million, it went on to collect over Rs. 650 million in India and over Rs. 155 million overseas.
Adjusted for inflation, the film ranks in the top four highest grossing Indian films ever.1
Not only did the film have immense success, it was also one of the biggest blockbusters of Indian cinemas during an era of short movies, where time length reduced to generally 2.5 hours [this movie being about 3.5 hours long and the longest of the 90s].
Hum Aapke Hain Kaun won several awards that year, including:
*Filmfare Award for Best Film
*Filmfare Award for Best Director - Sooraj R. Barjatya
*Filmfare Award for Best Actress in a leading role - Madhuri Dixit
Lata Mangeshkar, who sang more than 10 songs in the movie, had long retired from accepting awards, but the public demand for the song Didi Tera Devar Deewana was such that she received the Filmfare Special Award that year.
Source : Hum Aapke Hain Kaun...! Wiki Page