Everyone’s favourite terraforming/engineering/evilevilevil megacorp needs a giant billboard ad too! Third and (for now) last of my big 3″ wide by 5″ tall 300dpi ads. This one is also released under a Creative Commons CC-BY-SA License.
Mars image via Wikipedia, released under a CC-BY License. Weyland-Yutani image redrawn in Inkscape from various images found online.