National Center for Constitutional Studies

[FrugalMom]

Good materials for homeschoolers here.
Sample videos online.

http://www.nccs.net/index.html

[momma_to_seven_chi]

I think the very best Constitutional (type) study book is "YOU DECIDE- applying the bill of rights to real cases". *You have to buy both the student book and the teacher edition to be able to use it, so it runs over $50, but it's worth every penny. I used it with all four kids when they were about 15-16. *They all loved it. It was very high-interest rather than dry rhetoric.
http://www.cathyduffyreviews.com/history-geography/you-decide-bill-of-rights.htm

Michael Farris also has a Constitutional Study class online that a couple of my kids took. *It was good, but very in-depth and thorough.

The link you gave was great.