DI Alec Hardy in Broadchurch, played magnificently by David Tennant.
What I find truly remarkable is the contrast of knowing that David is a ball of fire in real life, one of the most energetic and enthusiastic people I have ever seen in my life and the portrayal of Alec Hardy, a devastated man, bitter, drained of all his strength, burned out by life and its problems. The way he moved, talked and even blinked really gave me the impression that he is ill and almost dying, his eyes always expressing that sense of anguish and desolation of a man in pain, physically and psychically.
This is what I call brilliant acting.
Some inspiration from DT (x)