Armando Iannucci's Charm Offensive: Series 1-4: The Complete BBC Radio 4 Collection

If you like Armando Iannucci, this is a must-have. Topical comedy with rotating guests. The humour is very 'Iannucci' but is also coloured to some extent by the guests, so quality varies somewhat. It took a few episodes for me to get into, but it soon clicked. Some references may now be dated (it is a topical show which ran from 2005 to 2008), but this is not too much of an obstacle. Overall: Very good, would buy and listen again.