Use Google’s Copy Of JQuery in WordPress

Grabs jQuery from Google’s CDN which your visitors will hopefully have cached. This can then be called in your header with <?php wp_enqueue_script("jquery"); ?>

 

Custom Excerpt Length in WordPress

Define how many words to return when using the_excerpt();.

 

Post Thumbnails in WordPress RSS Feed

Include the post thumbnail in your RSS feed.

 

Customise WordPress Admin Footer

Change the message that appears in the admin footer, why not give yourself a credit for the theme?