When I saw it, I had to order it. I knew, intellectually, that it was over-priced, under-powered (despite being capable of giga-flops) and not in the least user expandable... but goodness. I had never seen a computer like it (and still really haven't).
The G4 Cube is a work of art (sadly, many Cube owners were shocked to find that the manufacturing process left tiny cracks in the clear plastic of their Cubes... which they weren't fond off) and a computer.
I used my Cube as my main computer (attached to a 17 inch Apple Studio Display, which itself was a stunning piece of industrial design) for a good long while. When the time came to replace it I couldn't bring myself to give it away... so I packed it up in a box and moved it from Yonkers to my first apartment in Philadelphia to my second apartment and finally along with me when I moved in with Marisa.
It took awhile, but finally we purchased a piece of furniture worthy of displaying this work of art in the manner in which it deserves (pictured above).