I suppose there's a whole "sub-category" of appliances to add to this list. That is, UL-listed appliances for which there is no code-compliant way to install them.

I saw this recently with an attic fan. Wires came direct from the motor housing; there was no way to attach any fitting or raceway to the fan. No, you had to make a 'flying splice' to wires that you ran.

In a like manner, I have posted here a number of "luminaires" that simply cannot be mounted to a box.

Or, my personal favorite, the lights where the fixture will mount, but the wires need to be run in free air and enter the box... how? With the box in the wall, and the fixture mounted tight to the box, there's no place for the wires to enter.

I have to wonder just HOW UL tested these appliances.