Pity I missed the Diana Rigg/ Terry Wogan stuff. I don't know whether it has already been mentioned , but Andrew Neill has the most blatant syrup I've ever seen. It is dark brown and seems plastered to his head and you can see the join, as Eric Morecambe used to say.
Come to think about it their is a taxi driver I know whose syrup is worse.It looks like is made of steel, so hard and shiny it is and you can see the grey softer bits of his real hair sticking out from the side.
Andrew Neill used to get the piss ripped out of his wig by Spitting Image, they used a stapled on brillow pad that moved loosely.
By the way you can watch Paul O'Grady on 4oD:
Its episode number 35