William Shatner's kidney stone
The 'Star Trek' legend decided to sell his removed kidney stone back in 2006 and donated all the money to a housing charity.
Shatner - who played Captain James T. Kirk in the sci-fi franchise - said of his strange sale: "This takes organ donors to a new height, to a new low, maybe. How much is a piece of me worth?"
It turned out that a piece of Shatner was worth $25,000!