Damn, I really liked Rath's work; he was widely traveled and well read, and he brought all of that to some really on-point discussions.
And does every thread on this site have to get into political conspiracy theories immediately? A person can't just leave his job without it being some political statement against Gamergate or against somebody who doesn't even work here yet. These people are writers, folks, they'll tell you why they left if they want to and otherwise you shouldn't ascribe ulterior motives to them. Let's use the thread about Rath leaving to celebrate the work he did, not make him into a martyr for our pet causes.
With that in mind, here's a few of his pieces that stood out to me:
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/12610-You-Have-to-Earn-Your-Apocalypse-and-Call-of-Duty-Doesn-t-Always I really like apocalyptic literature, and I appreciate looking at it as something beyond an excuse to shoot people.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/11840-Why-Games-are-Terrible-at-Water Closer to an Experienced Points than a CI, but still really interesting.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/11380-Lies-Adults-Told-Me-About-Games Silly, stupid stories about what video games would do to impressionable young children.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/11232-The-Senator-Yee-Affidavit-Bribery-Triads-Drugs-and-Arms-Deals You want reporting? Here it is, actual newsman type stuff.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/10661-Three-Historical-Settings-for-Your-Zombie-Game Rath is great at putting twists on old ideas.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/10451-Modern-Warfare-is-a-Comforting-Lie He did a lot of pieces on war games and the opportunities they present (and squander). This is one of the best.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/10201-Hoth-The-Failure-of-Imperial-Military-Doctrine Something that's reasonably stupid, but incredibly entertaining; taking apart Hoth as an act of military strategy. His Endor Insurgency one is good too.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/10256-Gamifying-Guns For someone who never goes to conventions and knows little about real-world guns, this was both enlightening and terrifying.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/10351-GMing-From-The-History-Book
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/10302-I-Hate-Magic
I love tabletop games, and these two pieces resonated with my and my ideas about how to play them right.
http://www.escapistmagazine.com/articles/view/video-games/columns/criticalintel/10039-Conflict-Minerals-and-the-Game-Industry-The-Problem The article that started it all... actually it's a few articles into his column, but it generated a lot of interest in it's time, and it's still very relevant to how our games and machines are made.