If you ever wish to show recent comment on your blogs sidebar then a plugin i.e Get Recent Comments plugin will help you. This plugin shows excerpts of the latest comments and  trackbacks in your sidebar. You have comprehensive control about their appearance. The ranges from the number of comments, the length of the excerpts up to the html layout.

You can let the plugin order the comments by the corresponding post, or simply order them by date. The plugin can (optionally) separate the trackbacks or pingbacks from the comments.

It can ignore comments to certain categories, and it offers support for gravatars. It only gives extra work to the database, when actually a new comment arrived. You can filter out unwanted pingbacks, which originate from your own blog. And it is a widget.

Features of Get Recent Comments plugin:
→ Highly configurable via WordPress admin interface.
→ Support for WordPress upto 2.8
→ Adjustable layout by macros.
→ Handles trackbacks and comments in separate lists, or in one combined list.
→ Widget support
→ Caches the output
→ Order comments by date, or by posting
→ Support for gravatars.
→ Option to exclude comments to posts in certain categories
→ Doesn’t show pingbacks originating from own blog

Screenshot:

If you wish to tryout Get Recent Comments plugin then use the following link to download it:

Download Get Recent Comments plugin