I was browsing some of the top x lists over at Mashable and stumbled on this list:  http://mashable.com/2007/09/13/one-column-website-templates/.  Here are some of my favorites:

Bright Pixel - http://www.opendesigns.org/preview/?template=302

Finding Peace - http://www.opendesigns.org/preview/?template=120

Organic Design - http://www.opensourcetemplates.org/templates/preview.php?template_id=1275547786

Jesse Foster | jf26028