LordPretender

Similar to the original native one, this plugin let you define the range of stats to retrieve. 
Also you will be able to add the category name of the post.
Finally, this widget will only display posts (and not pages too). 
This plugin read the top 100 of posts/pages and keep only the X first POSTS (X = number defined in the widget parameters). So, you can have less posts than requested.
Jetpack is required to work. 
A wordpress account and your blog must be linked.
You can find a demo here : http://www.spoils.fr/ 
The widget is named “Articles populaires” on the sidebar.

Jetpack Popular Posts

Using Jetpack stats, this widget will display the most popular posts.

pjvolders

This plugin creates a point and click interface to add Google Street View panorama’s to your posts and pages. Click on the appropriate media-button to insert one. You can add as many panorama’s as you want and style them individually using CSS.
Features:
<ul>
<li>Easy to use (if you have used <a href="http://maps.google.com" title="Google Maps" rel="nofollow ugc">Google Street View</a> before, you will recognize the interface)</li>
<li>No template hacking required</li>
<li>No API key required</li>
<li>CSS can be used in the quicktag for advanced styling</li>
<li>New in this version: address searchbox</li>
</ul>
When you add the view to the post/page, the plugin generates a <code>[streetview]</code> tag. This tags contains the location and point of view information:
<blockquote>
<code>[streetview width="100%" height="250px" lat="34.360988" lng="-86.693436" heading="-94.17771883289124" pitch="-3.342175066312998" zoom="1"][/streetview]</code>
</blockquote>
The orther attributes (eg. width and height) are converted to CSS and you can add you own CSS as well. For example, this code will generate a square (500×500) street view window, with a green border:
<blockquote>
<code>[streetview border="green 1px solid" width="500px" height="500px" lat="34.360988" lng="-86.693436" heading="-94.17771883289124" pitch="-3.342175066312998" zoom="1"][/streetview]</code>
</blockquote>

Simple Google Street View

Adds the functionality for Google Street View windows to your posts and pages without the need of a google API key.

Jetpack Popular Posts vs Simple Google Street View