Well . . . 

You can sure enough pick out the Warhammer 40K ships, since they all look like they were designed by catherdral architects on acid.

And most of the Star Wars and Star Trek ships are also fairly obvious (once you blow the pic up enough to notice the latter).

But what the heck is that massive, rock-like mass in the upper middle of the poster?

And that roughly-equally-huge thing that looks sort of like a Shitake mushroom, just below it?