http://wordpress.org/extend/plugins/most-commented/
http://wordpress.org/extend/plugins/...-posts-plugin/
http://wordpress.org/extend/plugins/...content-smirc/
If you break Huffington Post down piece by piece, you can rebuild it completely in Wordpress.
If you want, find a design you like that's "news-y" enough for you and hit me up on ICQ and I can make look and function however you want ;) ICQ 565982359