Bradley James - David Bowie impersonation... well, sort of :P
Bradley James in SFX 10/09: "What the hell have you been told? I don't do good impressions. They're appalling to say the least. I quite often fall into a very bad David Bowie impression. Oh my god, I'm not going to be drawn into this as it's the most embarrassing moment of my life."
And we all know he'd be just SO good! \0/ Come on, Bradley!!! :D