It's been a while since I posted a WordPress Plugin recomendation so here we go.
How do you output certain posts in a widget?
The widget has over 40 options to choose from. You can list posts by category, tag, custom taxonomies, author, date, time, name, or anything you can imagine. You can choose to show the full content, excerpts, or even a simple list. You can order the posts in all sorts of ways. Oh, and you can even show pages.
You can set as many widgets as you want. Each one can output different content and with a different format.
Download it from the oficial plugin repository Query Posts.