There's the great http://www.ro.me/ - unfortunately they haven't made it work without www. Interactive music video for a track on the album Rome by Danger Mouse. Cool song, great video experience thing.
Reminds me of a (possible urban legend) email address from yesteryear: perhaps |at| yes |dot| no.
They're clever until you need to read them over the phone and confusion ensues, or until the private-company registry decides to hike fees.
I think it's pretty common to have a .com that redirects, which helps with the phone issue.
.ro and .bi are ccTLDs (for Romania and Burundi respectively), not private.