Most actors will tell you that auditions have the capacity to be quite an intimidating environment.
Being sat in front of a panel of executives and creatives who have the power to make or break your career is pressure enough, but to then add the unpredictable beast of performance to that mix is bordering on cruel.
That immense pressure isn't exclusive to live auditions either, as many actors put themselves through the ringer in order to make sure a self-taped audition is up to scratch, too.
So imagine having the guts - when faced with all of those combustible variables - to pull something out of the air and try a line or character trait that hasn't been put in a script for you to prepare.
Anyone who has attempted to improvise in front an audience will tell you that it can very quickly backfire, if you don't have faith in what you're about to do. Yet, guts translated into glory for this talented bunch and their sporadic moment of brilliance managed to bag them that all important role.