This plugin allows theme authors to create a post tempate as well as page template for the single post.
A custom built plug-in, which helps you to assign the custom template to the default as well as registered custom post_type category.
This plugin lets you select a specific template for a taxonomy term, just like pages
This plugin lets you select a specific template for a category, just like pages
Custom Template Generator for Newsletter.
WordPress plugin to create a custom post type for Press Mentions. Includes a (¡GENESIS!) template for displaying the single article, and custom field
Posts Page: Use Page Template
Get the Beauty of Your Webpages in Your Posts Too