query_posts('category_name=scribbles');
    	if (have_posts()) : while (have_posts()) : the_post();
            $posttags = get_the_tags();
    		if ($posttags) {
    			foreach($posttags as $tag) {
    				$all_tags_arr[] = $tag -> term_id; //USING JUST $tag MAKING $all_tags_arr A MULTI-DIMENSIONAL ARRAY, WHICH DOES WORK WITH array_unique
    			  
          }
    		}
    	endwhile; endif; 
    
	    $tags_arr = array_unique($all_tags_arr); //REMOVES DUPLICATES
    	foreach($tags_arr as $tag) {
				$includeTags = $tag.',';
			}
			$args = array('include'=>$includeTags);
      wp_tag_cloud( $args );

query_posts('category_name=scribbles');
    	if (have_posts()) : while (have_posts()) : the_post();
            $posttags = get_the_tags();
    		if ($posttags) {
    			foreach($posttags as $tag) {
    				$all_tags_arr[] = $tag -> term_id; //USING JUST $tag MAKING $all_tags_arr A MULTI-DIMENSIONAL ARRAY, WHICH DOES WORK WITH array_unique
    			  
          }
    		}
    	endwhile; endif; 
    
	    $tags_arr = array_unique($all_tags_arr); //REMOVES DUPLICATES
    	foreach($tags_arr as $tag) {
				$includeTags = $tag.','; //USING JUST $tag MAKING $all_tags_arr A MULTI-DIMENSIONAL ARRAY, WHICH DOES WORK WITH array_unique
			}
			$args = array('include'=>$includeTags);
      wp_tag_cloud( $args );

http://www.wprecipes.com/get-tags-specific-to-a-particular-category-on-your-wordpress-blog

Most of this code is by:
http://www.wprecipes.com/get-tags-specific-to-a-particular-category-on-your-wordpress-blog

I simply added the Tag Cloud

Wordpress: Category Specific Tag Cloud

wordpress

PHP