Multi-widget for displaying category listings for custom post types (custom taxonomies).
The List Custom Taxonomy Widget is a quick and easy way to display custom taxonomies. Simply choose the taxonomy name you want to display from an auto-populated list. You can also set a title to display for the widget. Multiple list custom taxonomy widgets can be added to the same and other sidebars as well. There are several display options (including as a dropdown), and it generally behaves similarly to the built-in categories widget but with the addition of custom taxonomies.
Please feel free to offer any feature suggestions you might have and I WILL consider them for future updates.