Page Title

Page Title gives you better control over what goes in the <title> tag of your pages. By default, Drupal uses the value for the "Title" field as the basis for the (browser) page title. This module lets you set up patterns to generate alternate titles, as well as allowing you to specify any individual title you want for a piece of content. I haven't actually used this one yet, but it's stable and looks pretty popular, so I'm sure it does what it says.