I've been keeping up On Beyond Zarathustra. Don't forget to check Tapastic for updates. But I won't keep mirroring all the updates here.
Here's something else I just posted to Flickr: a small gallery of graphics I worked up for SF and Philosophy, last time I taught it. Classic thought-experiments re-imagined as pulp novels. I would really like to take the time to do these up proper, but I only had time for a quick-n-dirty treatment. For example:
I explain the point over at Crooked Timber.