Hello, when I saw this workflow, I thought of an article in The Economist a few months ago:
Cartoons: Triumph of the nerds
It mentions several of the "modern, nerdy" comic strips already referenced in your workflow.
I thought I would suggest a few more from the article. Here are the names and RSS from their sites:
Bear Nuts http://www.bearnutscomic.com/ http://www.bearnutscomic.com/feed/ Garfield Minus Garfield http://garfieldminusgarfield.net/ http://garfieldminusgarfield.net/rss Dinosaur Comics http://www.qwantz.com/index.php http://www.rsspect.com/rss/qwantz.xml Hark a Vagrant http://harkavagrant.com http://www.rsspect.com/rss/vagrant.xml Megatokyo http://www.megatokyo.com/ http://megatokyo.com/rss/megatokyo.xml The Oatmeal http://theoatmeal.com/comics http://feeds.feedburner.com/oatmealfeed?format=xml
P.S. I like your Rotten Tomatoes flow too.