Something funky and industrial would be great. Used is preferable over new.
These are sort of vaguely in the genre, but not quite right:
If any one of those fell into my lap I'd probably consider them workable, but they're not quite what I want. I want to use it as a credenza in my dining room, so short is better than tall. Sinks, refrigeration units, etc. are unnecessary, but could be coped with if it was otherwise the right thing-- I can easily imagine doing something silly and whimsical with a sink. Doors are a must, and solid is better than glass.
I have a feeling that this may be partially a case of not knowing the right magic Google/Ebay/Craigslist search incantation, and partially not looking in the right place. If you were going to go somewhere and hunt something like this, where would you look?