I love hacking IKEA. I did it once already, and I've got Ikea Hacker in my google reader.
The problem: a deep counter top, with unusable space at the rear which becomes crowded with stuff
The Solution: Take a Rast bedside table and chop it in half.
I had to shorten the shelves of one of the halves, as I planned to use the space in between the two halves.
The Finished Product. Those are IKEA spice racks that we brought down with us from Canada. I can't find them on the IKEA website.
Close up of the spice rack mounting in the middle.
And filled with stuff!