Programme website: Ab Fab stars Jennifer Saunders, Helen Lederer and Harriet Thorpe discuss their routine. Lets Sing and Dance for .<br>Programme website: Quiz masters The Chasers show how they have been preparing for their performance.<br>Programme website: Catherine Tate as Nan, takes over Len Goodmans tea dance. Lets Sing and Dance for Comic Relief starts on Saturday .<br>Programme website: Presenter Alison Hammond lives like a rapper and gives us an exclusive look at her crib.
