I have used the Anything Slider to do this. A checkbox added to the post editor …

… and a simple query later …
// excerpt from my slider class
public function list_slider_items()
{
$posts = get_posts(
array(
'meta_key' => 'featuredpost'
, 'meta_value' => 'on'
)
);
if ( empty ( $posts ) or ! is_array( $posts ) )
{
print '<!-- no posts found -->';
return;
}
$out = '<ul id=slider class=noprint>';
foreach ( $posts as $post )
{
$out .= '<li>' . get_the_post_thumbnail( $post->ID, 'slider-img' )
. '<span class="slider-cat-list">'
. get_the_category_list( ' · ', 'single', $post->ID )
. '</span>'
. '<h2><a href="' . get_permalink( $post->ID ) . '">'
. get_the_title( $post->ID )
. ' <span class=more-link>Weiterlesen</span></a></h2></li>';
}
print $out . '</ul>';
}
… and it is nearly done.
You have to tweak the stylesheet very much. It’s a mess. But in the end you get a slider that can contain any HTML, is usable for keyboard users and fits to a percentage width.