kccricket

Automatically creates a sequentially numbered post title of your choosing if the title is left blank when the post is published. The plugin keeps track of what number to use and increments the number every time you publish a post with a blank title. Additionally, the post slug/url will be updated to reflect the new title if the author did not specify one manually.
An options page is available to set the title you want to use or to tweak the incremental number, should it become necessary. This plugin is very basic and is not multi-user aware. If any author on the site publishes a post with a blank title, SequenTitle will do it’s song and dance.

SequenTitle

Automagically set a sequentially numbered post title if you're too lazy to remember what number you're up to.

jschuller

Easily embed video within your posts. Adds a widget to the posting screen that enables you to post videos by simply providing the URL to the video hosted on common video sharing websites.
<h3>Usage</h3>
<ol>
<li>Within the WordPress Administration Control Panel, expand the Posts tab and then select Add New.</li>
<li>Create a title for your post and add a description within the post field.</li>
<li>Paste the URL to the video you wish to embed within the Video URL field.</li>
<li>Enter the Width and Height parameters for your video within the fields provided (optional).</li>
<li>Click Update Post to save your options.</li>
<li>Once the page reloads, a full preview of your embedded video should be displayed.</li>
</ol>

Simple Video Embedder

Adds a widget to the posting screen that makes posting videos a cinch.

SequenTitle vs Simple Video Embedder