The WordPress Loop widget, which requires 2.9, was written to allow users that don’t know their way around PHP to easily show their content in any way they’d like.
The widget has over 35 options to choose from. Customize your WordPress loop by one or more post types, categories, tags, custom taxonomies, authors, dates, custom fields, and a whole lot more!
In addition, it has support for post thumbnails, sticky posts, pagination, offsetting, customizable content length (by word count), and you can change the ordering from a variety of options.
More Info at: http://ptahdunbar.com/plugins/wordpress-loop/
Ptah Dunbar also has some more WP Plugins:
A WordPress widget that gives you unprecendeted control over displaying your comments loop and comment form.
Widgets Admin Fix
This plugin adds the ability to link to specific sidebars in the widgets admin page and have them open up automatically.