Exclude duplicated custom taxonomy within custom post type.

since i know you guys are all experts and all heres what i got.
i have a custom taxonomy inside a custom post type
there is a page that loops through and calls all the custom post types, and displays them
then at the top there is a dropdown that needs to list all the taxonomies for those custom post types

i have the page correctly displaying them, but the problem is the dropdown displays duplicated items. code below, the first is the code displaying now. the second is what i suggest but isn’t working

================ ORIGIONAL ======================

<?php
/**
Template Name: Our Work Page
 */
?>

<?php get_header(); ?>

		<div id="pagePost">
		<form method="post" id="clientform" action="" onsubmit="return getURL(this.url.value)">
		<select name="url" id="client">
	  		<option selected="selected">By Client</option>
	 <?php
    $args=array(

      'post_type' => 'our_work',
      'post_status' => 'publish',
	  'order' => 'ASC',
      'posts_per_page' => -1
    );
    $my_query = null;
    $my_query = new WP_Query($args);
    if( $my_query->have_posts() ) { ?>
	<?php while ($my_query->have_posts()) : $my_query->the_post(); ?>
    <?php $text = trim(get_the_term_list( $post->ID, 'client_name')); ?>
			<option value="<?php bloginfo('url'); echo "/client_name/"; echo $text; ?>"><?php echo $text;?></option>
	<?php endwhile; } wp_reset_query(); ?>

  </select>
<input type="submit" id="clientsubmit" value="Search" />
</form>
    <?php query_posts('post_type=our_work&posts_per_page=12&orderby=rand'); // call random blog post ?>
	<?php if(have_posts()) : while(have_posts()) : the_post(); ?>
		<div class="grid_5a ourWorkImgWidth">
        <a href="<?php the_permalink(); ?>"><?php echo the_post_thumbnail(array(200,200,false)); ?></a>
	    <h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
        <?php the_excerpt(); ?>
        </div>

		<?php endwhile; endif; wp_reset_query();?>

        </div> <!-- end of pagePost ID -->

<?php get_footer(); ?>

============ what im tryn =============

<?php
/**
Template Name: Our Work Page
 */
?>

<?php get_header(); ?>

		<div id="pagePost">
		<form method="post" id="clientform" action="" onsubmit="return getURL(this.url.value)">
		<select name="url" id="client">
	  		<option selected="selected">By Client</option>
	 <?php
    $args=array(

      'post_type' => 'our_work',
      'post_status' => 'publish',
	  'order' => 'ASC',
      'posts_per_page' => -1
    );
    $my_query = null;
    $my_query = new WP_Query($args);
	$counter = 0;
    if( $my_query->have_posts() ) { ?>
	<?php while ($my_query->have_posts()) : $my_query->the_post(); ?>
    <?php $termArray[] = array (trim(get_the_term_list( $post->ID, 'client_name'))) ?>
    <?php // $text = trim(get_the_term_list( $post->ID, 'client_name')); ?>

	<?php endwhile; } wp_reset_query(); ?>
    <?php for ($i = 0; $i < $termArray.count; $i++ ) {
		$tempArrayValueA = $termArray[$i];

			for ($j = 0; $j < $tempArray.count; $j++) {
				$tempArrayValueB = $termArray[$j];
				$counter++;
				if ($tempArrayValueA == $tempArrayValueB) {
					if ($counter <= 2) {
					echo $counter;
					unset($termArray[$i]);
					$termArray = array_values($termArray[]);
					}
				}else {  ?>
        			<option value="<?php bloginfo('url'); echo "/client_name/"; echo $termArray[i]; ?>"><?php echo $termArray[i];?></option>
			<?php } // end of if
			$counter = 0; // reset counter to 0 for each position in the orgiional array
			} // end of for

	} ?>

  </select>
<input type="submit" id="clientsubmit" value="Search" />
</form>
    <?php query_posts('post_type=our_work&posts_per_page=12&orderby=rand'); // call random blog post ?>
	<?php if(have_posts()) : while(have_posts()) : the_post(); ?>
		<div class="grid_5a ourWorkImgWidth">
        <a href="<?php the_permalink(); ?>"><?php echo the_post_thumbnail(array(200,200,false)); ?></a>
	    <h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
        <?php the_excerpt(); ?>
        </div>

		<?php endwhile; endif; wp_reset_query();?>

        </div> <!-- end of pagePost ID -->

<?php get_footer(); ?>