What's the worst speaker or stereo set-up you've ever seen?

Err.. a friend of mine has serious hoarding issues and over time was running out of storage space for his DVDs (+X-Box / PS3 games). Eventually he began stacking them on the floor on front of his Eltax Symphony speakers.

Eventually the pile began to grow upwards and slowly block the bass driver of his floorstanders. Finally came a point where the entire left speaker was operating from behind a wall of stacked DVDs.

Did it still sound good? Surprisingly yes, given that he had doubled carpets on his floor and the speakers stood very wobbly on top, either side of a large TV cabinet. Or maybe that helped with isolation!?

In any case no one complained when watching DVDs and the switch from TV sound to speaker sound was always welcomed by everyone.

At two different dealers I heard Wilson's which had the phase reversed.  Kind of the worst because of the expectations.

Two, decades ago.

A San Francisco audio system with Quads in a largely glass room. The apartment was high-end and striking visually, but the stereo sounded horrible.

At the Stereophile show in Miami in 1991, B&W was debuting their Nautilus line with something like $500,000 of Krell amplification (maybe tri-amped)? So loud and hard was the sound that I left after 15 seconds.

I was demoing two of the most popular products mentioned on this site paired together.  A very expensive ($5K+) pair of stand mounts and a popular Chinese manufactured tube amp.  
They were poorly matched and I am sure can sound good with other equipment.  The shocking part was when I asked the retailer why it sounded so bad he said it was because “my music sucked”.  He then payed some obscure music that sounded good.  I informed him I wasn’t planning on changing my listening tastes so I could have the pro ledge of owning these products.  
Shockingly, I didn’t buy either item.