This plugin will show the last X posts from the current category at the bottom of every post, or where you manually specify in each post. Using the built-in options page, you can choose the number of posts to show, set the header text, choose to show the post dates, select the format of the date, and choose whether or not to include the current post in the list. The latest version also has an option to show recent posts from all categories the current post is in.
Currently this plugin checks the first category a post is assigned to when generating a list of other posts in the same category. This means that it will work best for those of you who only assign one category to posts. This plugin now has a div wrapped around the output with the ddop class assigned to it. For example, if you wanted to decrease the size of the text in the output, add this to your CSS file: