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<block type="page/html_pager" name="product_review_list.toolbar" />
<block type="core/template" name="product_review_list.count" template="review/product/view/count.phtml" />
<block type="review/product_view_list" name="product.info.product_additional_data" as="product_reviews" template="review/product/view/list.phtml">
    <block type="review/form" name="product.review.form" as="review_form"/>
</block> 

<?php echo $this->getChildHtml('product_reviews') ?> 


\!h -----product reviews product last review

<?php
  $reviews = Mage::getModel('review/review')
      ->getResourceCollection()
      ->addStoreFilter(Mage::app()->getStore()->getId())
      ->addEntityFilter('product', $_product->getId())
      ->addStatusFilter(Mage_Review_Model_Review::STATUS_APPROVED)
      ->setDateOrder()
      ->addRateVotes();
  $ratings = array();
  if (count($reviews) > 0):
?>
  <ol id="recently-viewed-items" class="mini-products-list">
    <?php foreach ($reviews->getItems() as $review): ?>
      <li class="item odd">
        <div class="product-details">

          <p class="product-name">
              <a href="<?php echo $this->getReviewUrl($_review->getId()) ?>"><?php echo $review->getTitle(); ?> <span><?php echo $this->__('Reviews of'); ?> <b><?php echo $review->getNickname(); ?></b></span></a>
          </p>
          <?php foreach( $review->getRatingVotes() as $vote ): ?>
              <div class="ratings">
                  <div class="rating-box">
                      <span class="rating-number"></span>
                      <span class="rating nobr" style="width:<?php echo $vote->getPercent(); ?>%;">5 star</span>
                  </div>
              </div>
          <?php endforeach; ?>

          <p><?php echo $review->getDetail(); ?></p>
            
        </div>
      </li>
    <?php break; endforeach; ?>
  </ol>
<?php endif; ?>


\!h ----- product url on reviews summary product info on reviews summary get product link on review

<?php echo $this->getProduct()->getUrlInStore(); ?>


\!h ----- Review Summery out sumemry reviews

<?php

$storeId    = Mage::app()->getStore()->getId();

$summaryData = Mage::getModel(‘review/review_summary’)
->setStoreId($storeId)
->load($_product->getId());

/* @var $summaryData Mage_Review_Model_Review_Summary */

/*

array(
['primary_id'] => 147
['entity_pk_value'] => 166
['entity_type'] => 1
['reviews_count'] => 1
['rating_summary'] => 80
['store_id'] => 1
)
*/

?>

<?php
  $currentproduct = Mage::registry('current_product');
  $_product = Mage::getModel('catalog/product')->load($currentproduct->getId());
  $storeId = Mage::app()->getStore()->getId();
  $summaryData = Mage::getModel('review/review_summary')->setStoreId($storeId)->load($_product->getId());
  if ($summaryData->getRatingSummary()):
?>
  <div class="ratings">
      <span><?php echo $this->__('Rate product'); ?>:</span>
      <div class="rating-box">
          <div class="rating" style="width:<?php echo $summaryData->getRatingSummary() ?>%"></div>
      </div>
  </div>
<?php endif;?>

<?php $_helper = $this->helper('catalog/output'); ?>
<?php $_product = $this->getProduct(); ?>
<?php $_items = $this->getReviewsCollection()->getItems();
$storeId    = Mage::app()->getStore()->getId();

$summaryData = Mage::getModel('review/review_summary')->setStoreId($storeId)->load($_product->getId());

?>

<?php if ($summaryData->getRatingSummary()):?>
  <div class="rating-box">
      <div class="rating" style="width:<?php echo $summaryData->getRatingSummary() ?>%"></div>
  </div>
<?php endif;?>


\!h ----- Reviews collection

/**
* Getting reviews collection object
*/
$productId = $product->getId();
$reviews = Mage::getModel('review/review')
                ->getResourceCollection()
                ->addStoreFilter(Mage::app()->getStore()->getId())
                ->addEntityFilter('product', $productId)
                ->addStatusFilter(Mage_Review_Model_Review::STATUS_APPROVED)
                ->setDateOrder()
                ->addRateVotes();
/**
* Getting average of ratings/reviews
*/
$avg = 0;
$ratings = array();
if (count($reviews) > 0) {
    foreach ($reviews->getItems() as $review) {
        foreach( $review->getRatingVotes() as $vote ) {
            $ratings[] = $vote->getPercent();
        }
    }
    $avg = array_sum($ratings)/count($ratings);
}

Displaying the ratings
<!-- REMOVE 'IF CONDITION', TO SHOW RATING IN ALL RATED/UNRATED PRODUCTS -->
<?php if($avg): ?>
   <div class="rating-box" style="float:left;">
       <div class="rating" style="width: <?php echo ceil($avg) ; ?>%;"></div>
   </div>
<?php endif; ?>


\!h ----- Блок выводит 2 рандомных review продуктов

<?php
  $collection = Mage::getResourceModel('catalog/product_collection');
  Mage::getModel('catalog/layer')->prepareProductCollection($collection);
  $collection->getSelect()->order('rand()');
  $collection->addStoreFilter();
  $numProducts = 10;
  $collection->setPage(1, $numProducts)->load();
   
  $review_detail = array();
   
  foreach($collection as $product){
      $_reviews = Mage::getModel('review/review')->getCollection()
      ->addStoreFilter(Mage::app()->getStore()->getId())
      ->addStatusFilter('approved')
      ->addEntityFilter('product', $product->getId())
      ->setDateOrder();
   
      foreach($_reviews as $_review){
          if( $_review = $_review->getData() ) {
              $review_detail[] = $_review['detail'];
              break;
          }    
      }
  }
   
  $review_detail = array_slice( $review_detail, 0, 2 );
   
  print_r( $review_detail );
?>


\!h ----- Блок выводит последние ревью recent review

<?php
$collection = Mage::getResourceModel('catalog/product_collection');
Mage::getModel('catalog/layer')->prepareProductCollection($collection);
$collection->addStoreFilter();
$numProducts = 1000;
$collection->setPage(1, $numProducts)->load();
$review_detail = array();
 
foreach($collection as $product){
    $_reviews = Mage::getModel('review/review')->getCollection()
    ->addStoreFilter(Mage::app()->getStore()->getId())
    ->addStatusFilter('approved')
    ->addEntityFilter('product', $product->getId())
    ->setDateOrder();
 
    foreach($_reviews as $_review){
        $reviewid = $_review->review_id;
        if( $_review = $_review->getData() ) {
            $review_detail[$reviewid][] = $_review['detail'];
        }    
    }
}
krsort($review_detail);
$review_detail = array_slice( $review_detail, 0, 5 );
?>

<section class="testimonials-box">
  <div class="holder">
    <header class="heading">
      <h3><?php echo $this->__('Testimonials'); ?></h3>
    </header>
    <ul class="gallery">
      <?php $counter = 0; foreach($review_detail as $review): ++$counter; ?>
      <li <?php if($counter == 1) { echo 'class="active"'; } ?>>
        <blockquote>
          <q><img class="qt" alt="image description" src="<?php echo $this->getSkinUrl('images/qt.png'); ?>"><?php echo $review['0']; ?><img class="qb" alt="image description" src="<?php echo $this->getSkinUrl('images/qb.png'); ?>"></q>
        </blockquote>
      </li>
      <?php endforeach; ?>
    </ul>
  </div>
</section>


\!h ----- Review link reviews form link

<?php
  $current_url = $this->helper('core/url')->getCurrentUrl();
  $review_url = Mage::getUrl('review/product/list', array('id' => $this->getProduct()->getId(), 'category'  => $this->getProduct()->getCategoryId()));
  if($current_url != $review_url) :
?>
  <a href="<?php echo  $review_url ?>#review-form" class="btn">Write a Review!</a>
<?php endif;?>


\!h ----- top rated products rated high rated high ratings high rating

http://blog.chapagain.com.np/magento-how-to-get-top-rated-products/
http://odino.org/retrieve-top-rated-products-in-magento/

/**
 * Get Top Rated Products
 *
 * @return array
 */
public function getTopRatedProduct() {
 
    $limit = 5;
 
    // get all visible products
    $_products = Mage::getModel('catalog/product')->getCollection();
    $_products->setVisibility(Mage::getSingleton('catalog/product_visibility')->getVisibleInCatalogIds());
    $_products->addAttributeToSelect('*')->addStoreFilter();           
         
    $_rating = array();
 
    foreach($_products as $_product) { 
     
        $storeId = Mage::app()->getStore()->getId();
 
        // get ratings for individual product
        $_productRating = Mage::getModel('review/review_summary')
                            ->setStoreId($storeId)
                            ->load($_product->getId());
          
        $_rating[] = array(
                     'rating' => $_productRating['rating_summary'],
                     'product' => $_product                        
                    );             
    }
 
    // sort in descending order of rating
    arsort($_rating);
     
    // returning limited number of products and ratings
    return array_slice($_rating, 0, $limit);
}

Now, you can display the products in any template file. Here is the sample code to display the top rated products:-
<!-- I suppose that you have put the getTopRatedProduct() function in helper class of your module -->
<?php $topRatedProducts = $this->helper('yourModule')->getTopRatedProduct();?>
 
<ul>
<?php foreach($topRatedProducts as $_rating): ?>
    <?php $_product = $_rating['product']; ?>
<li>         
    <img src="<?php echo $this->helper('catalog/image')->init($_product, 'small_image')->resize(150); ?>"  alt="<?php echo $this->htmlEscape($this->getImageLabel($_product, 'small_image')) ?>" title="<?php echo $this->htmlEscape($this->getImageLabel($_product, 'small_image')) ?>" />
    <a href="<?php echo $_product->getProductUrl() ?>" title="<?php echo $this->htmlEscape($this->getImageLabel($_product, 'small_image')) ?>"> 
        <span>View Details</span>
    </a>
</li>
</ul>
<?php endforeach; ?>
- See more at: http://blog.chapagain.com.np/magento-how-to-get-top-rated-products/#sthash.0qRSK0hH.dpuf