^ Hitch did
direct Cary Grant in the first Bond movie. It just happened to be called North by Northwest and the hero wasn't called James Bond, but it's basically the template for Bond movies.
Nolan's admiration for the Bond series was evident in Batman Begins, with its globe-trotting scope and the fact that the villain had been created in the 1970s by Denny O'Neill as an answer to the James Bond bad guys. And, of course, you have Inception's OHMSS tribute scene.
As regards light-heartedness, I think that there was more humour and wit in Nolan's Batman series (even TDKR) than there was in e.g. Quantum of Solace or Licence to Kill. The relationships between Bruce and Alfred or Bruce and Lucius were exactly the sort of thing you'd expect in a Bond movie between 007 and M or Q.