elseif

<?php while ($my_query->have_posts()) : $my_query->the_post(); ?>

	<?php if ( get_post_meta($post->ID, 'video', true) ) { ?> 

<li class="videoplus"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>

<?php } else { ?>

<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>

<?php } ?>