Poco

If you have ever imported a Blogger blog into WordPress you probably have some posts that were originally missing a title. During the import, a title (and post slug) was created for the post that looks like a large numerical value. I believe this is the original Blogger post ID, I guess the importer needed something to use.
What this plugin does is replace those ugly numerical titles with the first few words of your post, like Blogger did. By simply enabling the plugin, any post that matches the ?ugly title? filter will have the title replaced by the first 48 characters of the post.

Blogger Title Fix

This plugin replaces the random title given to posts that were imported from Blogger with an excerpt.

This plugin searches your blog posts for images that are hosted on Blogger (blogger.com or blogspot.com), 
downloads them to your server, and updates your posts to refer to the downloaded versions.

Blogger Image Import

A plugin that copies blogger hosted images to your local server and updates the links within the posts.

Blogger Title Fix vs Blogger Image Import