I suppose there is the instant queue, but as far as I can tell, there is no way to sort the titles in it, besides doing so manually. And that doesn't help the process of wading through their streaming catalogue, when I want to see something new.
I too wish Netflix offered finer filtering abilities on site. Typically, I use a third party (non NF owned) site called instantwatcher. They allow you to survey the entire US Streaming catalog, with filtering by genre, release year, and ''Added to Streaming'' date, and more. All info on the site comes directly from Netflix (via a program they offered to web developers giving them access to their data, that they are now slowly limiting to the established developers, with no new access granted to new site developers).