Usually beer ads are loaded with partying, frivolity & innuendo. Heineken opted for a sociology experiment, of sorts: to introduce two people who aren't aware of their polar opposite views on hot-button issues, have 'em work together on a couple of projects, then watch a video of each other professing their opposite views. Then, they're invited to sit down and have a beer & discuss.
What happens then ... well, is pretty cool.