To play the role of Krrish, Hrithik Roshan lifted weights and dieted for two months to add 15 pounds of muscle to his frame.
When Hrithik Roshan jumped off a 30-foot-high clock tower in Singapore for an action shot, a cable broke in a freak accident. Luckily, he landed on a canopy that had been installed for the rains.
Hrithik Roshan received special training in Hong Kong for the special leap he makes in this film.
Hrithik's super powers in the film include super strength, speed, and the ability to jump superhuman distances. Like his father, objects that Krishna throws keep traveling through the air.
Like all the movies produced by Filmkraft Productions, Krrish has a title name starting with the letter 'K'.
While performing a stunt scene on the circus set, Hrithik Roshan suffered a hamstring tear in his right leg. Doctors prescribed bed rest for two weeks, but he continued shooting after two days.
Amrita Rao was the first choice for the role of Priya, but Rakesh Roshan saw Priyanka Chopra's performance in a special screening of Aitraaz (2004) and was so impressed that he decided to cast her.
Aishwarya Rai Bachchan was also considered for Priya's role.
The film contains product placement worth ~Rs. 12 crore (~US$3 Million).
Despite only 25 days of training in China, Hrithik's instructor, Siu-Tung Ching, thought that he could pull off stunts that usually take years of training.
Rajpal Yadav was approached for Hemant Pandey's role. He later appeared in its sequel.
When Krrish was launched, it was titled ' Koi...Tumsa Nahin'.
Rakesh Roshan had also registered the title ' Kaisa Jaadu Kiya '. He was almost going to name the film with this title. This was to cash on on the character of 'Jaadu'.
Indian firm, Prasad EFX, assigned a team of more than 100 VFX specialists to work with Hollywood special effects experts Marc Kolbe and Craig Mumma to create the visual effects for the film.
The film was released worldwide on 23 June 2006 at a budget of 450 million Rs. and on 1000 prints, both near-record amounts for an Indian film at the time.
A blockbuster , Krrish grossed a worldwide total of 1.17 billion Rs. becoming the second highest earning Indian film of 2006.
Rakesh Roshan hired Hong Kong action director Tony Ching after admiring his work in Hero .
A detailed story board of the film was prepared and sent to Tony Ching to help him develop the action sequences.
Krrish was the first Indian film to be shot in Singapore under the Singapore Tourism Board's Film-in-Singapore subsidy scheme, and more than 60% of the film was shot there.
Shooting was accomplished on location over a span of two months, from September to November 2005.
The Singapore police were on location to block roads and protect the filming equipment, such as when the film's action scenes required two 250 foot high industrial cranes.
Lyricists for the film included Ibraheem Ashk, Nasir Faraaz, and Vijay Akela.
It was the first Indian film to receive payments in advance for product placement, music, and international distribution rights.
Salim-Sulaiman provided the film's background score.
Preity Zinta made special appreance in the movie. She plays Rohit's wife Nisha in a flashback cameo.
In a showing of the film's popularity with children, Krrish swept the major film categories at the Pogo Amazing Kid's Awards, which are voted on by children across India.
Krrish was in five languages simultaneously.
Krrish is considered to be a trendsetter in Indian cinema, with visual effects on par with those from Hollywood.
Filming also took place in Manali and Film City in Mumbai.
The film's songs were composed by Rajesh Roshan.
Additional production credits include: Farah Khan – dance choreographer, Samir Chanda and Sham Kaushal – art directors, Baylon Fonesca and Nakul Kamte – sound, Nahush Pise – makeup artist.
Krrish was one of India's possible nominations for the 2007 Academy Award for Best Foreign Film, but ultimately, Rang De Basanti was chosen.
The film was shot by cinematographer Santosh Thundiyil.
For this film Rakesh Roshan won the Creative Person of the Year title.
At the 2007 IIFA Awards, Krrish received nine nominations and won three, with one being Best Actor for Roshan
Krrish also won the National Film Award for Best Special Effects
