I've been wanting to launch a series on "Ethicureanish" music, and a friend in England has just turned me on to a great band with which to start. Carbon/Silicon is the project of Mick Jones (formerly of The Clash and Big Audio Dynamite) and Tony James (Generation X and Sigue Sigue Sputnik). They make politically astute, current-sounding punkish rock, much of which is free to download from their website.
Having just come home from the farmers market this morning, I was hooked on their energetic song "The News" with the very first lines: "People started caring about what they eat/People started smiling at everyone they meet."
Given all the horrible news right now — flooding in the Midwest, food riots, etc — I defy anyone to not be cheered up by it. Alas it's no longer posted on their site for download, but you can watch the (jerky) video for it on there, or hear the whole thing streamed for free at LastFM. The album it's on, 2007's "The Last Post," is available on iTunes. I also recommend "Soylent Green," which you can listen to on their MySpace page, and "Buckethead," their 8-minute, slightly pedantic screed about carbon vs. silicon, or "meatspace" versus "internet" (and disengagement).
And while I'm at it, I've always thought the Shins' "Sleeping Lessons" would make a great SOLE food anthem: You're not obliged to swallow anything that you despise." (Official video on YouTube)
Got any songs you want to recommend about chewing the right thing? Even tangential ones are fine. :-)