I was just checking up on my ING Direct account and found this stuff on their site for teaching kids about saving and investing. http://home.ingdirect.com/privacy/privacy.asp?s=ParentsTeachers I looks very cool, and it is free.
Finance is key to teach kids even at a young age. Our local bank even had a little kids bank within the adults bank so they could make their deposits! I love that. KidsMoneyFarm has great printable templates that let you print out fake money to start teaching your kids and the templates are FREE! Free is always good.
If you have kids that are in high school, Google "dave ramsey car video". It's a great lesson for kids and parents!