The Namoradeira rocker was designed by Jose Zanine Caldas in the 1970s. While we've never been a fan of the double rocker or any seating where that forces interaction, for that matter (shouldn't that be a choice?), we could definitely find a place for this in our house. By the look of it it can't be too comfortable, but we don't think we'd mind - like a killer pair of shoes, sometimes you have to sacrifice for style.
Available from Hedge Gallery, price upon request (that can't be good).