What a brilliant (stolen) concept!

I just saw this campaign in Ads of the World:

Really awesome concept. But not an original one. The ads immediately sent me searching through my blog archives to find the originals, in an art photography series by Argentinian photographer Irina Werning:

The ad version is by an agency called Propeg in Salvador, Brazil. The creative team is Ana Luisa Almeida and Emerson Braga (CDs) and Edson Rosa (AD).

So here is my question for photographers and ad creatives alike: Is it right to rip off someone's personal art project for ad glory and profit? Is it "inspiration" or outright theft?

An Ottawa radio station is currently running ads that use the Sleeveface meme. But that's a collaborative and tongue-in-cheek project that uses already copyrighted work. This, on the other hand, is a clear ripoff in concept, style and content — with only the addition of a product placement — Irina's Back to the Future and Back to the Future 2. Is it even legal?

Opinions welcome. I have e-mailed Irina as well.