WordPress › AuthorSure « WordPress Plugins

Show your face and build your brand in Google search results. Or in SEO-speak, make sure your AuthorRank is contributing to your PageRank.

Makes it easier to get Google Authorship Verification
Uses rel=author, rel=me and rel=publisher links to connect your posts, archives, authors pages, Google Plus profiles and Google Plus pages.
Works on single and multiple author sites
Supports several ways to link your posts/pages to your author pages: byline, footnote, author box or menu link.
Helps you set up your archive pages for Google authorship verification
Allows you to add a title, short or extended bio and sub-headings to your author pages
Creates links from your site's author pages to the authors' Google Plus Profiles on Facebook, Twitter, LinkedIn, Pinterest, YouTube and Skype as well as Google+
Creates a link from your home page to your Google Plus Page for your product, brand or organization
Allows you to control whether your rich snippets show the original post publication date or the last time the post was updated.
Allows you to control whether external links in the author bios are rel=nofollow
http://www.authorsure.com/category/themes has set-up instructions for most popular WordPress themes