If you're looking for scene releases, just use a pre database like preDB.com. Find a release on preDB, copypasta the release name to binsearch, create the NZB, done.
Generally speaking it's very easy to find material just using binsearch. If you want a 1080p copy of a particular film, just search for the film name along with '1080p' and you're almost guaranteed to get relevant results on the first try.
In any case, with more and more takedown requests being directed at usenet providers, I think usenet's days as a safe haven for piracy are numbered.