Index: tests/Zend/Log/LogTest.php
===================================================================
--- tests/Zend/Log/LogTest.php	(revision 21105)
+++ tests/Zend/Log/LogTest.php	(working copy)
@@ -287,4 +287,26 @@
         $logger = Zend_Log::factory($cfg['log']);
         $this->assertTrue($logger instanceof Zend_Log);
     }
+    
+    /**
+     * @group ZF-8953
+     */
+    public function testFluentInterface()
+    {
+    	$options = array(
+    		'writer' => array(
+				'writerName' => 'Null',
+    		),
+    		'filter' => array(
+    			'filterName' => 'Priority',
+    		)
+    	);
+    	$log = new Zend_Log();
+    	$l   = $log->addWriter($options['writer'])
+    			   ->addFilter($options['filter'])
+    			   ->addPriority('foo' , 10)
+    			   ->setEventItem('message', 'Test Fluent Interface');
+    		
+    	$this->assertTrue($l instanceof Zend_Log);
+    }
 }
Index: library/Zend/Log.php
===================================================================
--- library/Zend/Log.php	(revision 21105)
+++ library/Zend/Log.php	(working copy)
@@ -344,6 +344,7 @@
      * @param  string   $name      Name of priority
      * @param  integer  $priority  Numeric priority
      * @throws Zend_Log_InvalidArgumentException
+     * @return Zend_Log
      */
     public function addPriority($name, $priority)
     {
@@ -358,6 +359,7 @@
         }
 
         $this->_priorities[$priority] = $name;
+        return $this;
     }
 
     /**
@@ -366,7 +368,7 @@
      * must be accepted by all filters added with this method.
      *
      * @param  int|Zend_Log_Filter_Interface $filter
-     * @return void
+     * @return Zend_Log
      */
     public function addFilter($filter)
     {
@@ -385,6 +387,7 @@
         }
 
         $this->_filters[] = $filter;
+        return $this;
     }
 
     /**
@@ -392,7 +395,7 @@
      * message and writing it out to storage.
      *
      * @param  mixed $writer Zend_Log_Writer_Abstract or Config array
-     * @return void
+     * @return Zend_Log
      */
     public function addWriter($writer)
     {
@@ -410,6 +413,7 @@
         }
 
         $this->_writers[] = $writer;
+        return $this;
     }
 
     /**
@@ -417,9 +421,11 @@
      *
      * @param  $name    Name of the field
      * @param  $value   Value of the field
-     * @return void
+     * @return Zend_Log
      */
-    public function setEventItem($name, $value) {
+    public function setEventItem($name, $value) 
+    {
         $this->_extras = array_merge($this->_extras, array($name => $value));
+        return $this;
     }
 }