<?phpglobal $wp_query;$postid = $wp_query->post->ID;echo get_post_meta($postid, 'blueberries', true);?>
At the moment I'm using this, with "blueberries" being my custom field.
Courtesy of WPRecipes.
I guess what I'm asking is, is there a shorter bit of markup I could use?
http://css-tricks.com/snippets/wordpress/using-custom-fields/
I prefer checking to see if the value exists first, but based on what you've posted it doesn't look like you need that.