I converted an old
Dell Dimension XPS T500 to a standard ATX case to use, does that count?

Unfortunately stupid me made the modified front cable too short, got lazy and impatient, and just used a generic ATX case that was lying around instead. Once I get a replacement CPU cooler with a backplate, it's going in there. (The bad thing about the generic case is that it has basically nothing for ventilation; I have to run the thing with no side cover or else it's starved for fresh air.

The Dell has vent holes on the front.)
Seriously though, my taste in PC cases leans more toward subtle, functional, and beige.

(Also cheap, I don't like spending even $50 on a metal box to put computer parts in.) That Cooler Master case looks like it has plenty of ventilation, though.