That was one of the things I hadn't really put together. Since the first movie and this movie, the rest of us have been living that revolution, largely engineered by people who were Tron fans. That's pretty deep, man.

I am a little in awe of Jeff Bridges. He's an actor I have admired for many years, and so I didn't know who I was going to get, in the sense that I didn't know what he was going to be like. And so I was pleasantly surprised that he is this kind of laid-back guy.

I also thought the music was a huge contribution, in terms of creating the scale of that. And, I was impressed with just how natural and fluid the world looks. The world is so artificial and it requires so much work to make all the different pieces add up together, but when it comes together, it just looks effortless. It's amazing.

Working with CGI is more like doing theater where your sort of imagining things. I didn't experience it as restrictive.

Working with Joe [Kosinski], definitely. I loved working with Joe. For a guy who doesn't really come from the fiction world - he comes from advertising and architecture - he's extremely easy-going and very calm. He's extremely detailed, but a very generous and fun director to work with. He really encouraged me to find the fun in the part and to have fun with it.

The acting in Downton Abbey has been consistently excellent across the board.

I was surprised by how much of it I was in [Tron: Legacy]. I thought the character was just going to register as a smaller figure because most of what I did was with a body double, and then I would do the stand-in with Jeff [Bridges] and he would be just wearing his regular clothes.