Mumbai, Oct. 11 -- Megastar of the century Amitabh Bachchan is celebrating his 83rd birthday today (October 11). In a career spanning over five decades, he has redefined cinema in every era. Sometimes as an angry hero, sometimes with emotional characters, winning hearts. As he aged, he continually reinvented himself. Let's take a look at some of his most memorable roles.

Sholay (1975)

"Sholay" is a milestone in Hindi cinema. Amitabh's restraint and depth in the role of Jai still captivates audiences. His pairing with Dharmendra and the story of revenge against Gabbar became memorable.

Zanjeer (1973)

The image of the "angry young man" began with this film. Amitabh created a new identity in Hindi cinema as Inspector Vijay, who avenges h...