WP Elegant Testimonial is a WordPress plugin by WPREVIEWPRODUCT that allows you to insert testimonials to a post or page. There is no limit to the number of testimonials you can use on a specific page. You can insert as many testimonials as you want using shortcodes.
Plugin homepage: http://wpreviewproduct.com/wp-elegant-testimonial-create-beautiful-testimonial-for-your-wordpress-blog-229
Download: http://wordpress.org/extend/plugins/wp-elegant-testimonial/