To walk or not to walk. Aussies have been famous for not giving anything: "Umpire's job, mate." Gilchrist, indeed, got into some trouble for doing it, with other cricketers and supporters but more especially with Test teammates. "If you are saying you are honest and don't need to go by the umpire's decision, what does that say for the rest of us?"
But there have been Walkers in Test cricket: Peter Walker for England, Brooke G. K. for New Zealand and even one for Australia, Max Walker or, in full, Maxwell Henry Norman Walker.