takien

This plugin will show post list as dropdown just like wp_dropdown_pages, most parameter wp_dropdown_pages are accepted too.

WP Dropdown Posts

This plugin will show post list as dropdown

PluginsPoint

Kento Scroll. Jump. Top. Is a simple and very light plugin that will take your visitors to the top of the page once they are scrolling through your page.
Plugin Features
<ul>
<li>Select from 20+ icons</li>
<li>Smooth transition</li>
<li>Easy install and active</li>
</ul>
Plugin Demo and Support: http://kentothemes.com/items/plugins/kento-scroll-jump-top/

WP Dropdown Posts vs Kento Scroll Jump Top