Müllerlight hits back against faddish dieting guides in its latest TV ad. The latest instalment of its Eat Happily Ever After campaign, Brick, will run for eight weeks from this month as part of the fat-free yoghurt brand's £7.5m push for 2009. It follows the scenario in which a fad diet book is dispensed with in favour of a pot of Müllerlight. The book is shown being embedded in a wall by a distracted brickie.