<a href="http://forrst.com" rel="nofollow">http://forrst.com</a> and <a href="http://dribbble.com" rel="nofollow">http://dribbble.com</a> would be two places to check out.
<a href="http://sidebar.io" rel="nofollow">http://sidebar.io</a><p>It's also a social news website, but works different than HN. It uses telesc.pe which is kinda cool :)