Melbourne was a really great theme for Moodle 1.9 by Danny Wahl and he’s now done a quick port to Moodle 2.x (actually 2.2). You can download it from Github (he hasn’t officially released it to the Moodle database) and use it at your own risk. If you’re not on Moodle 2.2 you’ll need to nix the version.php file within the theme folder (that’s what I did and got it to work on Moodle 2.0.4).
Pretty slick-looking (and I don’t think it loses anything by not having the analog clock).