You can also order a toolkit, which is packed with awesome posters and DVDs and CDs (even a 3D comic book "science fact/fiction" guide to Journey to the Center of the Earth 3D, which came out this summer); download a calendar; see which states have issued proclamations about ESW; look up Earth science career resources, scholarships and internships; find information on planning your own event; and get your event featured in the ESW photo gallery. (Oh yeah, and a Facebook Group and Newsletter. Everyone should sign up for the newsletter - you'll find out about the contests way ahead of time, as well as other useful geonews.)
Advocating Earth science is really important right now, especially considering that it's an election year (and not just on the national level). There are a number of states where Earth sciences are being cut from the curriculum entirely, because someone in charge of the pursestrings has got it into their head that the geosciences aren't "real" science, and therefore not important. It's totally appalling, and one reason that I keep blogging - I don't want to waste any opportunity to tell people that Earth science is really, REALLY important. AGI actually has an advocacy guide up on their "Pulse of Earth Science" webpage, along with pages that list the current Earth science curriculum standards in each state.
A few other bloggers have also put in mentions about ESW, and if we all do, we'll be making a big difference. If nothing else, you can have fun greeting everyone this week with a cheerful "Happy Earth Science Week!" - and maybe some of them will join in!