Don't worry! It's only stuff...

<?xml version="1.0" encoding="UTF-8"?>
<!--
	./app/design/frontend/default/default/layout/local.xml
-->
<layout>
	<default>
		<!-- remove default recently viewed block -->
		<remove name="right.reports.product.viewed"/>

		<reference name="head">
			<!-- add recently viewed css -->
            <action method="addCss"><stylesheet>css/recently-viewed.css</stylesheet></action>
		</reference>
	</default>

	<catalog_category_layered>
		<reference name="content">
			<!-- add recently viewed block -->
			<block type="reports/product_viewed" name="my.reports.product.viewed" template="reports/product_viewed.phtml"/>
		</reference>
	</catalog_category_layered>

	<catalog_product_view>
		<reference name="content">
			<!-- add recently viewed block -->
			<block type="reports/product_viewed" name="my.reports.product.viewed" template="reports/product_viewed.phtml"/>
		</reference>
	</catalog_product_view>
</layout>

/* recently viewed block */
.category-products,
.product-view {
    margin-bottom:15px;
}

#recently-viewed-items .product-image {
    height:127px;
    text-align: center;
}

--- ./app/design/frontend/base/default/template/reports/product_viewed.phtml	2011-01-12 13:26:26.000000000 +0100
+++ ./app/design/frontend/default/default/template/reports/product_viewed.phtml	2011-01-12 15:54:07.000000000 +0100
@@ -31,10 +31,13 @@
         <strong><span><?php echo $this->__('Recently Viewed Products') ?></span></strong>
     </div>
     <div class="block-content">
-        <ol id="recently-viewed-items">
+        <ol id="recently-viewed-items" class="products-grid">
         <?php foreach ($_products as $_item): ?>
             <li class="item">
-                <p class="product-name"><a href="<?php echo $this->getProductUrl($_item) ?>"><?php echo $this->htmlEscape($_item->getName()) ?></a></p>
+                <a href="<?php echo $this->getProductUrl($_item) ?>" class="product-image"><img src="<?php echo $this->helper('catalog/image')->init($_item, 'small_image')->resize(125, 125) ?>" width="125" height="125" alt="<?php echo $this->htmlEscape($_item->getName()) ?>" /> </a>
+                <div class="product-details">
+                    <p class="product-name"><a href="<?php echo $this->getProductUrl($_item) ?>"><?php echo $this->htmlEscape($_item->getName()) ?></a></p>
+                </div>
             </li>
         <?php endforeach; ?>
         </ol>