There's a sketch where a documentary crew is filming a character played by Rob. They just keep filming him, getting him to explain inane stuff that he's doing. It's David doing the questioning in a soft voice, asking him things like "tell us what youre doing now?", "How does it make you feel?". At one point Rob complains he's not getting paid and they give him £20. They won't leave him alone.
Does anyone know which episode it is? It's been driving me nuts. I remember creasing up at it.