He obviously learned from the experience because he was much more comfortable in the sequels and in Jack The Giant Slayer.Jari K said:Now don't get me wrong. McGregor didn't suck in the film. I just felt that at the time he wasn't that natural in front of the green screen. I believe McGregor himself called the film "flat". And IMO he's right. Not horrible, not disaster.. Just a bit flat and lifeless.