According to the wiki, one of the default arguments for:
<?php wp_list_cats('arguments'); ?>
'all' - string - Text to display for the option to show all categories (default is "All")
On my site, I do not get the option to view all. Here's the site:
I have tried several permutations, including:
<?php wp_list_cats('hide_empty=0&optioncount=1','all'); ?>
<?php wp_list_cats('all&hide_empty=0&optioncount=1'); ?>
What's the trick to getting that option to return?