the_author_lastname()
Display the last name of the author of the current post.
WordPress 2.8.0 Hooks, Functions, Classes and Methods
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the_author_login()
Display the login name of the author of the current post.
the_author_meta()
Outputs the field from the user’s DB object. Defaults to current post’s author.
the_author_msn()
Display the MSN address of the author of the current post.
the_author_nickname()
Display the nickname of the author of the current post.
the_author_url()
Display the URL to the home page of the author of the current post.
the_author_yim()
Display the Yahoo! IM name of the author of the current post.
the_modified_author()
Displays the name of the author who last edited the current post, if the author’s ID is available.
the_widget()
Output an arbitrary widget as a template tag.
themes_api()
Retrieves theme installer pages from the WordPress.org Themes API.