I blame myself for learning about danish conceptual art group N55 from a belgo-italiian art blog. But now that gizmodo is picking up the links to the N55 ROCKET SYSTEM manual, I better get in on the linkfest.
The HOME HYDROPONIC UNIT, N55 SPACEFRAME and LAND manuals also deserve mention.

The approach is reminiscent of that of SUPERFLEX in many ways - almost to the extent that one group could be considered a joking reference or an homage to the other group.
One has a fixation on a color scheme, the other on a particular spatial geometry, both groups produce conceptual mock commercial art with a political message of world improvement pinned on.