This illustration from issue four of the MVCreations Masters of the Universe comic (volume one) is by far one of my favorites from the series. Emiliano Santalucia's detailed line art is incredible, as we see the tiny figure of He-Man being launched out of the mouth of Snake Mountain by the force of an explosion! The colors by Val Staples are equally as breathtaking. It may sound odd, but I think this would make for an amazing poster!
(click on the image to see it at full-size)