http://moviesblog.mtv.com//wp-content/uploads/movies/2013/02/inception-hallway.jpg Christopher Nolan's "Inception" is a stunning achievement of the modern blockbuster era. It began mostly as a favor to Nolan from Warner Bros. to keep him happy enough to stick around for a third Batman movie, but what the director did with that one round of backscratching is create the kind of film we may not see for a long time. "Inception" is an action movie, but it's one based on an idea, which is, — you probably know — is the most resilient parasite. But...