Not sure if this is what you are asking, but I did have one client register and host with me one of the funniest domains... it still make me laugh to this day, because this was a full-fledged site, and they were oblivious to their faux pas:
DietsHitResearch.com = dietshitresearch.com = DietShitResearch.com
This has always taught me to look twice at a domain before registering.