David Williams was delisted for a year under the unwritten rule that clubs had first right to reacquire a player who sat out a year due to injury. Richmond went against this and grabbed him. He wasn't happy about it and ended up chucking it in and going back to the country.
Two more recent ones - Trent Ormond-Allen and Sean Charles.
Charles was more than five minutes, but after his wrist injury he didn't do much with us, then even less with Carlton and St.Kilda.