http://www.binsearch.info/ Is a good way to search for media on newsgroups. (Using NZB files)
Forté Agent (http://www.forteinc.com/) is a good browser (and downloader) for PC; I've used it for over 10 years.
If you're on a mac, I suggest hogwasher; it seems quite buggy but it's the best usenet reader I can find for mac. (http://www.asar.com/)
If you're just gonna download media, like software or music, I suggest NZB Drop instead of hogwasher. (http://www.asar.com/) Tons more stable and a lot less of a CPU hog.
For usenet servers I suggest giganews. Haven't really tried any other servers... Because giganews has been plenty for me; pretty fast, too.
