Tennant has a palpable sense of fun, buoyed by a childlike energy. In Doctor Who he feigned drunkenness to fool the Clockwork Droids (The Girl in the Fireplace) and he put in an hilarious turn as a Russell Brand-style apparition alongside companion Catherine Tate in Nans Christmas Carol. He can also currently be seen in Comic Relief's "Make Your Face Funny For Money" campaign and most recently he surprised Radio 4 listeners by executing a perfect 60 seconds of unbroken waffle on Just A Minute. He embraces comedy, from the absurdist antics of Skys This Is Jinsy, to the semi-improvised naturalism of What We Did On Our Holiday. He doesnt mind trading on his looks or sending them up in order to get laughs and his chemistry with Tate, a regular collaborator, is testament to this.