Rockstar
Dutch company Niko van den Berg promotes its 'mental training' services with this eye-catching ad.

I'm not exactly sure what 'mental training' is really about, but the ad surely communicates a strong brain. How does it do it? By using two clenched fists put together in the shape of a human brain.

The ad is created by HOUDINI, Amsterdam, The Netherlands, with art director Boris Peters, copywriter Wilbert Leering and photographer Marcel Christ.