It is being gossiped that Aamir Khan's Ghajini is based on the Hollywood movie Memento.Memento is one of Hollywoods top groseesr and was Chris Nolan ( The Dark Knights) directors first movie. Memento is a psychological thriller film written and directed by Christopher Nolan, adapted from his brother Jonathan's short story "Memento Mori." It stars Guy Pearce as Leonard Shelby, a former insurance fraud investigator searching for the man he believes raped and killed his wife during a bur