Renowned Stanford GSB Professor Jeffrey Pfeffer argues that that the current popularity of authenticity in leadership practice is actually misplaced.  He suggests that being "usefully inauthentic" is more suited to corporate life - that we should stop focusing on what leaders "should" do and focus on what they actually do.

It's a pretty cynical perspective overall - and perhaps reflects the current state of corporate America.

That said, I must admit to being a fan of leaving "should" out of our thinking. I tend to think that focussing on what is - and proactively taking action to deliver what can be - is much more effective than postulating about what "should" be.