Amitabh Bachchan, actor extraordinaire and India's uber-celebrity, celebrates his 80th birthday today. Star of films like Deewar, Sholay and Amar Akbar Anthony, Big B, as he is fondly known, lives in the hearts and minds of generations of Indians. Now an octogenarian, Amitabh Bachchan is still among Bollywood's busiest stars. He was last seen in Goodbye, Jhund and Runway 34 and has a release coming up in Unchai. Here's a roundup of over 50 years of film magic and history as well as the wishes that have poured in for Big B from celebrities.