Saying something is "So bad it's good" has become an upsetting cliche. But the bad/good description has never been more apt than in the case of singer/dancer Sara Carlson. Her performance on the Italian Saturday night show "AL PARADISE" is SO steeped in shit that you think it was handwoven from faeces, double-dipped in diarrhea, and finished in a fine layer of farts. Then you realise that you're actually watching the greatest exhibition of the human body in motion ever seen. There's such a fine line.