A sports enthusiast, he told Digital Spy how it felt to see his father Amitabh Bachchan as an Olympic torchbearer, his highlights from the opening ceremony and his proudest moment at the 2012 Olympics.
How does it feel to be at the London 2012 Olympics as an ambassador for OMEGA?
"It's my first Olympics ever. I've never seen the Olympics live. It's a great privilege and I thank OMEGA and the entire team for enabling me to be present for so many events. It's wonderful to be here. I'm not an athlete participating. I'd be lucky to have qualified, but it's wonderful to be here.
"I was at the Olympic stadium last night. The park is beautiful. It's wonderful to see so many people there and it's so well organised. I really think that London has outdone itself. The spirit of London is really shining through. They have pulled it off with great élan. We had the fun task of work last night, which turned out to be seeing Usain Bolt win his [100m] final, so it's a tough life and I'm looking forward to seeing many more events.
"But the highlight of the evening was not the 100 metres final for me. It was to see the Indian flag flying in the stadium. It's great fun to be here, but it's a proud moment for me as an Indian."
"Firstly, thank you to the city of London for bestowing such a wonderful honour to my father in asking him to run with the Olympic torch. For all of us back home, it was a huge matter of pride to see an Indian running through the streets of London with the Olympic torch."
What did you think of the opening ceremony and what was a highlight for you??
"For me the highlight was seeing Rowan Atkinson playing 'Chariots of Fire'. I'm a huge Blackadder and Mr. Bean fan so I thought it was brilliant. I guess 'the Queen' jumping out of the chopper was fun.
"What I really liked about the opening ceremony is that I think - most probably by design - since Danny Boyle directed it, they made a conscious effort to move away from the stiff upper lip, British kind of ceremony that we were expecting with a lot of pageantry and history. I like the fact that he made it very casual, very tongue-in-cheek and showed a completely different side [to Britain]. It was very refreshing."
How do you feel about the Indian participation so far, and what can be done to make sport a greater priority in India?
"I'm going to the basketball in the evening because I'm very passionate about basketball. I was hoping to go to the boxing to cheer on Mary Kom. Mary Kom has been making the country very proud. She was brilliant this morning. I happened to see her on television. As a proud Indian and as a sports enthusiast I wish all our Olympians the very best. It's not just the winning that matters. I think the spirit of the Olympics is about participating.
"We were talking earlier about why cricket isn't in the Olympics. We could also churn out a very successful basketball team and I'd love to help in that. Basketball is my favourite sport and I'm also a very passionate football fan. I think if we could channel our energies and get organised, even in track and field we could do very well. Even if it takes several generations, we'll get there.
"There is huge talent back home and I'm hoping that very soon we can churn out a very strong Olympic team. The amount of medals we have won has made front page news in India. Imagine if we won more?"
Were you ever anything of a sportsman yourself?
"I was a sportsman in my younger days. I was a basketball player which is an Olympic sport. I saw the high jump yesterday. I was a high jumper at school.
"I feel very strongly about how we need to push sports back home in India. I still feel that in India we look upon sports as a recreational activity - which it is - but people have to understand that there is a career in sports. It's not just necessary to be a doctor or a lawyer or an engineer, as most of us Indians appear to think that our children should grow up to be. Sport is an integral part of our daily curriculum and especially in school.
"When I was in school, sport was given utmost importance. I think it's fantastic for character building, for team playing, and I think it's a great profile for a nation. One in every six people on earth is an Indian, and I look forward to the day when we can compete with the heavyweights of the sporting world and do well in the medal tally."
Photo gallery - London 2012 Olympics:
"We live in hope. It depends more about when and if we are awarded the Olympics in any of our cities. The opening ceremony would have to reflect the times. There would be a lot of history. We have a huge cultural heritage we can display. I think it depends on which year we are allocated and the situation of the country.
"Unfortunately I think what happens in a lot of our opening ceremonies is that because we are a cinema-loving nation, our film industry tends to overshadow a lot of other things. If we had the Olympics, I'd like to see an aspect of our films in there because that is a huge part of our identity as a country, but it should be an overview of the entire nation. We are a very diverse nation, so we have a lot we can do. I think it would be great."
Would you encourage your daughter to partake in sports?
"I'd love to. As a new parent, obviously it's a bit too early. My daughter's only 8 months [old]. But I'd love to. I've been a sportsman as a child and it's been an integral part of my character building and I truly believe that sports go a long way to shaping a human being. It's a great lesson in life. I would be overjoyed and would encourage my daughter to play sports.
"Whether she wants to take that up as a career is up to her, but I would definitely encourage it. I think it's so sad that children are sat inside on computers or watching television. I used to love going out to a park and playing over there and I think they should be encouraged."
What words of encouragement might you wish to give the participating athletes going for gold?
"Do your best. I don't think anyone expects anything else. The fact that you've achieved a place at the Olympics is huge. Do your best, be honest with your sport - I expect nothing else. Go up there and give it your best shot. Don't come back with any regrets... 'I wish I'd worked harder'.
"I'm not saying I want a gold medal. The sheer fact that we see your effort and you are playing your heart out that's all I expect."
You've recently scored box office gold with Bol Bachchan. How does it feel to be part of the very exclusive 100 crores club?
"It's a milestone [that] we used to call a silver / golden jubilee. It is a very exclusive club, and I'm very proud and happy to be part of it. You feel wonderful. Anytime you work hard on something and the work is appreciated, it's always a good feeling.
"I'm very excited about the fact the audiences have loved the film and you can't ask for anything else. We're thankful to God, and we're dying to get back in front of the camera and achieve even more."
How are plans for the Dostana 2 and the Dhoom 3 shoots progressing?
"We're waiting for Tarun [Mansukhani] to finish the [Dostana 2] script and so we don't know quite what's happening with that, but John [Abraham] is a dear friend and I'd love to work with him again. The 'prodigal sons' are returning too. Uday [Chopra] and I have been part of the [Dhoom] franchise, and now we're part of the third instalment of Dhoom. I hope we don't disappoint audiences."
There seems much cause for celebration in the Bachchan household, and your father is also celebrating his birthday soon. How do you plan to mark the occasion?
"We haven't planned anything as yet. He's turning 70 [in October], so it's a big day. We'd love to celebrate it."
We're also celebrating 100 years of Indian cinema. How do you feel about this milestone in Indian cinematic history?
"[I'm] looking forward to the next hundred, and I hope when they speak about that they'll make a small mention of me."