Bollywood named with a nod to Hollywood is the largest film industry in the world. It is the name of the Hindi film industry in Mumbai, formerly Bombay.

The typical movies are generally lively musicals with timeless tales of love, infused with stunning dance scenes. They are somewhat similar to our musicals in the 40s. In the films is the same choreography danced with as many people as possible.
The decor shows often beautiful natural landscapes and majestic architectural buildings. The films usually have a sugar-sweet, romantic style with beautiful men and women and often with typical "good and bad" characters. The hero or heroine is often surrounded by a group of dancing supporters. Movements are expressive, where the dance supports the story.

Dance in the Indian film was initially based primarily on Indian dance: classical Indian styles, the mujra, folk dance,... Influences from the West were very early, and Indian dance elements were blended with Western dance styles soon.

Bollywood dance is the dance style typical of this Indian film industry. It consists of many different styles and influences, from classical and Indian folk styles to all kinds of modern and western dancing. In India itself this Bollywood dancing is called 'film dance', Indian clip dance.
Suggestive looks and gestures, uplifting bhangra rhythms (a folk dance from Punjab, often mixed with hip hop and r & b) and fast movements make of Bollywood an expressive video dance.

Bollywood dance is quite popular in London. Hiphop teachers are there in 3 months prepped to follow the hype and give lessons. Also in the Netherlands (less in Belgium) it wins to fame.
Bollyrobics, bollyaquarobic and more like decoctions popping up now already in the commercial circuit.