Netflix still does not support "normal" streaming through Linux and a web browser. But it can play through Wine.
Tested on: Fedora 18 (64 bit)
Through terminal (root):
If you do not have wget installed --
yum -y install wget
wget -c http://sourceforge.net/projects/postinstaller/files/data/Netflixplayer.tar.gz
tar -xvzf Netflixplayer.tar.gz
You should have a couple windows that will pop up. This script will also install Microsoft Silverlight.
Now run the Netflix app.
On the first run, the script will install any Wine packages that you need. (Wine Gecko, MONO, etc)
Once it is installed, it will launch Mozilla Firefox through Wine. When you sign into Netflix and view the first movie, a Silverlight window will pop up asking to play protected content. Click on Enable Content, and your movie should start playing.
Tested on Linux Mint 14 x64
Tested on Linux Mint 15 x64 -- 07/14/2013
Open terminal and type:
sudo apt-add-repository ppa:ehoover/compholio
sudo apt-get update
sudo apt-get install netflix-desktop