One of my favorite Tom Clancy novels is Without Remorse, or as I describe it - How Clark became Clark. It was an excellent read with only a small reference to Jack Ryan. I had always thought that, if the screenplay followed the book, it would make an excellent movie.
Thing1 pointed out to me today that John Singleton has signed on to do Without Remorse. Great director. Boyz n the Hood is one of those movies that you need to see.
Now we just need Clark. And no Ben Affleck.