What good storage rack or furniture are there? What considerations should I have to build one?
Turn a 2x4 Ikea Expedit bookcase on its side. Add more units if you need more storage. It's deep enough to easily hold up to a 60" or so TV on top.

http://www.ikea.com/us/en/catalog/products/10103088

I'd say go for the ones with the varying sized cubby holes, but I guess they're not on the website anymore.

You can also get handy little boxes that fit into the holes, so that your actual games are tucked away.