'Shit'players who proved us wrong.

I think we normally know if a new player is any good and it's seems obvious to me that Hennessy,PVA and Mutch will never change our opinion that they are shit and they will never prove us wrong.Who has proved us wrong in the past though?The only player I can think of was David Hopkin when we signed him from Chelsea.Absolute rubbish to start with then our best player,Wembley match winner then a big money move to Leeds.Never thought he would ever curl one at the start though.....