Here is a place for people to recommend or talk about different shelving ideas.
Here is a shelf I think looks really good that I want to look into at IKEA.
Its called the EXPEDIT. Its 72"w x72"h x16"d. Its got 5 squares by 5 squares. I'm not sure if that leaves enough room in each square though. No details on the site on individual square sizes.
I also like this thing called the GORM.