I have watched my fair share of movies that incorporate characters who suffer from memory loss such as Memento, Bourne Identity, 50 First Dates, and even The Notebook. I would easily say that the Bourne series is the best series I have ever seen but I will focus on the memory loss associated with the main character Leonard Shelby from Memento. Lenny suffers from a memory loss condition after his head was injured from trying to save his wife from being murdered in his own home. The thing is, the police are not trying to track down this guy so he feels he needs to get vengeance for his wife's death. His memory loss is short-term. He has to write notes on photos and tattoo important information to enhance his memory of past recent events. He explains that if someone talks too long or he takes a nap or is not doing something for a while that he will become preoccupied and not remember recent events. This seems to be characteristic of dementia. However, even though this disease can occur before geriatric stages of age, I do not feel he was really completely disoriented or suffering physically as well. He was simply disoriented most often with his mission of finding the killer of his wife. That makes sense because most crime investigations are quite complex and take a lot of notes and time to go through information even for police who do not suffer from memory loss.