We've a thread here for free streaming services, so it made sense to have an overall topic for paid services as well.
Netflix is still king, but Hulu Plus has made some inroads.
And recently HBO announced a standalone streaming service distinct from it's traditionally "wired" product.
The latest is CBS, and they appear to be being a bit greedy IMO. They want to charge $6 a month, which I suppose isn't ruinous if you make them your ONLY streaming service (but not as much of a deal