I have 2 of the Ikea Detolf for memorabilia
but all of my large box games are in Ikea Billy units:
http://www.ikea.com/us/en/search/?query=billy
there's a lot of versatility, and you can get glass doors for them as well.
I have to get clever with the really big stuff, it seems there are quite a few very large editions that just don't fit well anywhere.