Abhishek Bachchan on Thursday went down memory lane to 2006. The actor wrote that Umrao Jaan is very special to him as he fell in love with his wife, Aishwarya Rai Bachchan, while shooting the JP Dutta film. Calling it his favourite in the Dhoom franchise, the Bob Biswas actor wrote, "Dhoom 2 saw a whole bunch of my childhood …