I was fortunate enough to be part of the team doing the VFX of twoface. And one thing that struck me was that throughout production Nolan always emphasized his decision to only use CGI where practical effects were not possible.
While that essentially means less potential work for us CG VFX guys it also means our craft does not get abused so much, which is better for all.
With that I mean that "lesser" directors often get carried away by the power and possibilities of having a team of VFX artists at their disposal. Dreaming up crazy shots that defy logic, not because they should, but because can because the budget's there.
Nolan's a guy that knows what he wants and uses the right techniques for the right type of shot. It's a pleasure to work with such directors. Alfonso Cuaron's another such director.
BTW... Glad you liked the work.