It's Tuesday. That means the latest instalment of Fat Fighters (8.00pm, Channel 4, the trainers focus on exercises to get their clients' legs into shape) followed by the latest episode of The Biggest Loser. Emotions are running high in the house as the partners try to adjust to being split into new teams. As each trainer puts the contestants through their particular fitness regimen, it becomes clear not everyone is happy with the arrangement, but they all pull together to win the most desired of prizes - a letter from home.