Megastar Amitabh Bachchan was thrilled when he spotted Hollywood superstar Robert De Niro in attendance at a panel discussion at the ongoing THiNK 2013, a thought provoking fest, here. Bachchan was one of the speakers.

 

 

 The 71-year-old took to Twitter to share his excitement.

 

 "Just finished my conversation at THiNK…exciting and exhilarating…and in the audience, Mr. Robert De Niro! Stumped for words," Big B posted on the microblogging site Friday.

 

 The third edition of the annual festival, THiNK 2013 is hosting a series of panel discussions which will bring together eminent names from different walks of life- politics, technology, science, literature, medicine, environment, pop culture, business, media, religion, sport and cinema.

 

 The festival, which started Friday, will conclude Sunday.