Last week I thought I'd sold voz.com (virtual oz is the reason I initially registered it... I'm in Australia, or Oz as we like to call it here) but then the buyer backed out at the last minute.
Also sold vcbd.com about 2 years ago but then snapped it back a year later when the original buyer did not renew it. I was also the RSP (registration service provider) and I emailed him and his company half a dozen times but nobody answered. I even tried calling them on the phone. I think they might have gone out of business.
Back in the 90's my first big sale was vmm.com and then the company that bought it forgot to renew so it went to some other diligent domainer.
That's all the v's I can think of right now off the top of my head