Remember that Wonderbra and Bendan ad pairing [1], which even ended up in Resumé [2] (sadly without a link back)? Researcher [3] set out to prove that this idea of using the double-page spread as a vital part of the ad idea isn't that unusual, he took a dip in his ad collection and came back with all of these....

Many more inside, this is fun - and just for fun. I don't think any of the pairings were aware of the other.
Bendans thong is better than Triumph's thong in my humble opinion - here we have two thongs in the spread.

vs.

But this clever use of the spread isn't reserved for underwear, here's a pair of televisions.

vs.

OK, we get it, that flat screen is really flat. Smart.
For wonderbra we have these two - one is interactive like the Brendan thong, the other just uses a strategically placed pen.

vs.

And here's two that I don't quite get - I can't read the brand name but it's probably a Prepration-X type deal.


This proves nothing except that all creatives minds are in the gutter. ;)
edit: oops, first comment reminded me that I forgot to add this always ad. Yeah, they're thin. Got it.

extra credit - see the piercing idea where the staples in the gutter 'pierce' a womans nipples [4]
Links:
[1] http://commercial-archive.com/136178.php
[2] http://www.resume.se/nyheter/hoppsan/wonderbra_plagiat/index.xml
[3] http://researcher.se/
[4] http://commercial-archive.com/79.php
[5] http://technorati.com/tag/dupliclaims