Chris Nolan wasn’t always a big-deal, big-budget, IMAX-fortified mythologist whose movies were invariably greeted as events. Once upon a time he was just a clever, regular-guy filmmaker. We’re talking about a five-year period when he made Following (’98), Memento (’00) and Insomnia (’02). That Nolan no longer exists, of course. He became CHRIS NOLAN in ’05 with Batman Begins and never looked back. But I miss the 29-year-old Memento guy…I really do.