I think Mary Beard would be a great guest. She's witty and outgoing and at least a little technically savvy. Plus hse would undoubtedly plug the discussion on her blog (at the very least if we asked her to) and that would get us some publicity. Since we already have a Roman lined up, we might want to wait on her next book. According to her latest blog post, she's working on a book on Roman humor, which I think would be a great topic.