4. Michael Ball, Jamie Foxx, Beth Ditto, Peter Björn & John. (2007)

Four weeks into the new series and the guest list shows signs of strain, and that's not just down to Beth Ditto's bulk. Peter Björn & John are described as "Swedish folk rockers" - is it just me, or does that sound like a cue to stuff your ears with broken glass?

Release date: 2007-09-28