Dan Hanna, a CG artist, took 2 photos of himself for 17(!!!) years. He starts off at 32 years old and it ends at 49 years. His head is also rotating as it's going on. A pretty cool example of some stop motion animation too.
And some babe takes a picture of herself for 4.5 years. The interesting part for me was how her haircuts changed her face. I was kind of digging the pixie cut thing. Either that or when her hurr was at its longest.