When I saw this T-Mobile ad, I thought that even though the flashmob thing is now rather more tired than wired, it was, nevertheless, really well done. (And they were in fairness early attendees to the flashmob party with the Liverpool Street dancing malarkey some time ago.)

However when I read the YouTube comments, and saw a reference to: 'Bienvenue Au Revoir' and the ad below it rather took the shine of things.

Not sure which came first, but looking at the YouTube views I think the French might have the nod. It's also wonderfully bonkers in a spoofy Harry & Paul Canal+5 Citroen ad way.

Pity the ads are so close to each other, but both have great emotional appeal and merit. And the music choice on the T-Mobile ad is very, very good.

I suspect the industry will debate this one for a week or two, but will the target audience know about the similarity, much less care, I doubt it.