His trademark dancing style, romantic antics which charmed heroines in many a Bollywood film and being a computer buff in later years created the "Shammi Kapoor phenomenon" which would be remembered by his fans forever.
Being the son of Prithviraj Kapoor and brother of "showman" Raj Kapoor, carving a niche was not easy for Shammi. Embarking upon his acting career, he had a lot of expectations to live up to. Shammi was aware that comparisons will be drawn because his brother was already an established superstar and an acclaimed filmmaker. He knew that if he needed to make a mark, he should be as different from his brother as possible.
However, making his debut in 1953, Shammi's initial film portrayed him as nothing more than a mere shadow of his brother Raj. Films like 'Rail Ka Dibba', 'Chor Bazaar', 'Shama Parvana', 'Hum Sab Chor Hain', 'Memsaheb' and 'Miss Coca Cola' had Shammi in a completely different get-up, especially his hairdo, his moustache, and even his on-screen antics resembled those of Raj Kapoor to a consider­able extent.
It was only in 1957, with Nasir Hussain's 'Tumsa Nahin Dekha', that the actor finally tasted success. He sported a new look sans whiskers on the lines of the contemporary Hollywood greats like Elvis Presley and James Dean - and a star was born. Shammi often discussed with his friends on how best to present himself, especially when his films bombed at the box office one after another.
Bunny Ruben came up with the title rebel star, struggling to make a space against the reigning trio of Raj Kapoor, Dev Anand and Dilip Kumar. 'Tumsa Nahin Dekha' was also Nasir Hussain's directorial debut and its success prompted the Nasir-Shammi pair to follow up with several blockbusters.