How do I display a content author's userpoints next to the author's name on posts? I have set up the User Points module and want to show authors' points next to their name.

What is the simplest way to do this?
The API function to get the points is userpoints_get_current_points() *. Just call that function with the uid of the author and display the returned result.

* Note that my API documentation page only lists the Drupal 7 versions, this function works the same way in Drupal 6 and 7 but others might not.