I've got a " IHateCompanyNameHere.ext ". Picked it up because the name referenced a generic term for a product that I wasn't happy with at the time. Wasn't even thinking of it in terms of the company it it might also relate to/represent. A few days later it dawned on me (OK, so I'm a little slow sometimes...). Have never done anything with it, not that clever I guess.
Got it a few years ago after it expired. The previous owner had used it to vent his displeasure with this company. Turns out it was the only one left "in the wild", the multi-billion dollar company owns all the rest. Guess they weren't paying attention that day.
Maybe someday I'll get smart and put it to good use...
*Edit/Correction*
Just did a whois and it turns out that the big company alluded to above actually has only the com, biz, info, and possibly eu (not able to check eu at this moment) all other extensions (aside from mine) seem to still be available.