I have to echo the gushing. I think the words 'animal magnetism', like someone said earlier totally sum it up. I haven't even seen Bond yet, but I am a huge fan of Layer Cake because of him, and seeing that, it's easy to envision him as Bond.
Add to that that he's a fantastic actor--his role as Perry Smith in Infamous, Ted Hughes in Sylvia, and in Enduring Love have blown me away.