Dave Farley. Dave being Dave in a scene from the feature film "BILLY MADISON"

Hugely talented and endlessly funny, Dave Farley is a delight for audiences, but more than a bit of a challenge for the production’s script supervisor.

He's known for his penchant for ad-libbing and improvising, often straying from the script. Rarely does he deliver the same line or action twice, which keeps everyone on their toes.

But it’s this very unpredictability that makes his performances so hilariously memorable.