My blog title & entry title fonts have been changed courtesy of Typekit. The fonts used are Tenby Six for the blog title and Tenby Five for the entry titles, both by Paragraph, an Australian foundry. I’ve only signed up for the trial membership for now so I can test it out before committing further. You can sign up yourself, or I can give you one of the five memberships they gave me for signing up.
Another blog using Typekit is Bobulate, belonging to Liz Danzico. The font she is using is called Skolar. Looking at her blog then lead me to Typedia which is a site to which she contributed. That should keep me occupied for a while.