New Movie, Old Plot

Movies that copy, shamelessly. I just got done watching "Hide and Seek." And I wonder how many more movies will steal from the Jackel and Hyde plot --- where a seemingly together man is chased by a mysterious ghost or person, only to find out in the end that that chaser is the same man, only his alter ego. What was that one called '--- "Hidden Window"or some such where the writer is chased by a man in a hat, only to find out that he has a split personality. There was Fight Club, which was the first that I remember watching of this plot.

But my favorite is the plot where a family man -- has his family killed and he goes on a rampage or quest to bring justice to his family. Gladiator steals from many other films before this in this same plot.

But I guess there are other more universal plots, such as girl meets boy, they fall in love and either happy ending or tragic ending --- but it just seems like the split personality one has been used too often in the last few years.