This box-set essentially contains the 'Christmas With The Simpsons'and 'The Simpsons Classics - Bart Wars' DVDs.
'Christmas With The Simpsons' - the fifth Simpsons short-length DVD release, centered around a Christmas theme - contains five episodes - 'The Simpsons Roasting On An Open Fire', 'Mr. Plow', 'Miracle On Evergreen Terrace', 'Grift Of The Magi' and 'She Of Little Faith'. The last episode has never been shown on BBC2.
Meanwhile, 'The Simpsons Classics - Bart Wars' is one of 5 re-releases of old video collections, this one centering around a sci-fi theme. The four episodes contained are 'Mayored To The Mob', 'Dog Of Death', 'The Secret War Of Lisa Simpson' and 'Marge Be Not Proud'.