I'm taking the University of Edinburgh's Astrobiology and the Search for Extraterrestrial Life course from Coursera. It's a bit of a disappointment - just a guy talking and showing slides from his IPAD. The problem is that I haven't really heard anything new. One problem with Astrobiology is that it doesn't actually have any subjects yet - but that hasn't kept string theory from prospering.
I was hoping to learn something about prospects for life in other galaxies - maybe later.