I live for shit like this. Ikea Hackers is a website built off of submissions by people who have taken the cookie-cutter designs of Ikea & made them even more functional. This might be my favorite.
The owner had two bookcases from Ikea & the shelves were starting to sag. So, he cut up the shorter one to brace the frame of the taller one & made this super creative sideboard. Add some white paint & a nice wood top & viola. Awesomeness.
He actually based his design off of another post from Ikea Hackers. I believe it was this one.
I would post the before pictures to show you what he was working with, but they are literally too ugly. Let's just say this was a major upgrade.