Lost THE most important domain to me once. One of the first, if not the first domain I owned, for a term I came up with years ago....don't know how I can stress the importance lol. Anyway I lost it and someone picked it up, put some ass 1 page site on it, and wouldn't sell. Site never changed, as I watched it for about 5 - 6 years. I had it on backorder and one day i saw it in my godaddy account.
That was a great day.