I went to a lecture today by Tim Read from Emory University. He discussed comparative genomics, specifically of Bacillus and Chlamydiaceae species and strains. The history of the latter is rather interesting: researchers thought these bacteria were actually viruses until the 1960s (due to the advent of electron microscopy, of course) as they couldn't culture them on artificial media. It's a group full of pathogens with wide host ranges but small, highly conserved genomes so it would be useful to know more about.

This review served as a basis for some new additions to the Chlamydophila psittaci Wikipedia page.