Where can you see our favourite Mr. Men, lovable picnic moocher Yogi Bear, ‘sniggering hound’ Muttley, and KITT, the talking car from the Knight Rider  TV series, all in one place?

This ultimate collection of nostalgic pop-culture icons have been brought together for the first time by Müller, Britain’s most popular yogurt and chilled pot dessert brand, to celebrate its new ‘Wünderful Stuff’ campaign. With a total spend of £30million in 2011.

Central to the company’s biggest ever marketing push is a £20million integrated advertising campaign, set to launch with the first round of this year’s The X Factor live finals. The epic, 90-second commercial will air simultaneously across 50 channels, including the coveted slot during Britain’s biggest entertainment show. Central to the campaign is the idea of “stirring a little bit of Wünder” into everyday life.

The commercial, made by TBWA\London, features a host of much-loved famous characters transforming a dull, grey cityscape into a vibrant world of bright colours, rainbows and unicorns.

The ‘Wünderful Stuff’ multi-media campaign will air from 8^th October and incorporates television, video on-demand, outdoor, online, print, cinema, social media and point-of-sale advertising. Creative build billboards will see the characters come to life across prime locations such as London’s Cromwell Road, the busiest road in Europe, and the full 90-second commercial will be rolled out across some of the biggest films of the year.

“The aim of the ‘Wünderful Stuff’ campaign is to get consumers to sit up and take notice”, says Lee Rolston, Marketing Director at Müller Dairy. “Over the years we have continued to stir in an imaginative mix of ingredients to turn a product which was seen as plain and ordinary into something which is fun and delicious.

“That’s exactly what the ‘Wünderful Stuff’ campaign sets out to do. It captures the essence of the Müller brand which is essentially all about the enjoyment and fun of a great-tasting product.”

Dedé Laurentino, Executive Creative Director at TRBWA\London, added: "I think it's great that a brand should remind us to stir a bit of wonder in our days, and beat the mundane out of our lives. Such a mission needs to reach as many people as we can -- and talk to their heart. It's a rallying cry. It has to be truly wünderful."