Though the deerstalker is no longer a staple of the English gentleman's wardrobe, it makes an ironic appearance in Sherlock;

"You're Sherlock Holmes, wear the damn hat," Watson quips, shoving the deerstalker in Sherlock's face. It's a familiar line, delivered in an unfamiliar setting.

YOU might think that Clay Johnson, a campaigner for transparency, would be pleased to see a ferret, with a deerstalker hat and magnifying glass, pop up on his screen.