In the wedding scene, Sameer says that Aishwarya Rai's chracter, Nandini, acts as if she is Miss World. Aishwarya Rai, actually was Miss World in 1994.
Sanjay Leela Bhansali and Ismail Darbar spent two years on the music of the film.
After Khamoshi: The Musical, Bhansali was looking for a new film concept. Around this time, a Gujarat fan of his named Pratap Karwat began to pester him on the phone, claiming he had an interesting story for him. Bhansali kept fobbing him off until the man flew into a rage and forced him to listen to his story on the phone - and Bhansali loved it enough to want to meet him the next day.
The bridge shown in the movie was set in Budapest, Hungary, but Bhansali felt that names like Budapest or Hungary would not connect with the masses, so the Hungarian scenes were shown as Italian in the film.
Bhansali and art director Nitin Desai toured Gujarat, Bhuj and Kutch to get the perfect locales and research the lifestyles and culture extensively. Due to this research, the sets designed were so good that Desai claims he got a letter from a filmmaking team in Canada asking which part of the country the location was in.
For the lit-up acrylic floor in the garba song, Nitin Desai placed marigold flowers, which are traditionally offered in temples, under the acrylic sheets.
Samir's strange habit of looking at the sky and talking to his deceased father comes from director Bhansali's childhood, when he had done the same thing.
This movie also resulted in a real life romance between Salman Khan and Aishwarya Rai, the most publicized love affair in the history of Indian Cinema.
Due to a chandelier accident on the set, Aishwarya Rai danced to "Nimbooda" while her feet were swollen.