I never thought my kids would want to see photos of their baby/childhood years when they grew up. I was wrong!
My 35 yr old son has complained that there are very photos of him in the formative years, while there are 1000's of his brothers and sisters. I pointed out that unfortunately it was his bad luck to be born during our 'slide showing' phase - he would have to get his older sister to go through boxes of slides and then get a print taken off them.
If you are looking for some ideas on family photos that get kids involved in the process then check out:
A Father Who Creatively Captures His Kids (20 photos)http://www.mymodernmet.com/profiles/blogs/a-father-who-creatively