VW Polo 'singing dog' by DDB London.Transport for London 'optical illusion' by M&C SaatchiMars 'Monks' by AMVThe singing dog totally rules. I've worked on that brief so I know it ain't easy; big props to the team. And just check the YouTube comments for proof of how much the public loves this ad.The optical illusions one hits a completely different bone. Very clever. Very thought-provoking. I love the fact that they show a car crash without showing a car crash.P.S. Now that we're seeing everything first on YouTube and not TV, an interesting test of an ad is "after watching it, do you immediately watch it again?"I went 'yes yes no' on these 3. What about you?