Lars Liden did a ton of work to redo his walk-in closet, including building an outdoor hutch for his hot water heater. It’s more a home-improvement than a woodworking project, but it’s still worthy of note because he has detailed pictures of the whole thing.
http://flickr.com/photos/larsliden/sets/1737556/
One note: if you build a project with movable shelves, instead of painstakingly locating each shelf pin hole, use a shop-made shelf pin hole jig like this one at Benchnotes or this one at Woodworking Tips.
You’ll thank me for it.

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