I'm sure I'm far from the first person to notice this, but I finally went to see Hellboy II today, but in it, this happens (SPOILERS): Apparently, thousands of years ago, magical creatures made a pact with humans to leave each other alone. Now, a prince of Elves has decided he should attack humanity and reclaim the world. What made him decide that? Humans have spent too long tearing down nature to make room for "parking lots and shopping malls".
Two weeks earlier, Wall-E featured a world in which, essentially, Wal-Mart had brought about the end of the world by expanding over everything. Two movies in the same summer about the evils of consumerism. That's kind of neat.
Also, they both have toys for sale. I've seen them.