Guys... Got a set up to light and it's a bit challenging. It's basically a shot of a couple sitting on a sofa watchin a black and white TV. I want the light of the tv to 'flicker' on their faces. Obviously I can't use an actual TV coz of the dimness of the light... what do you guys suggest? Rotating cookies? Flapping Flags? What d'you reckon... Cinematographers S.O.S.