Time Warner's beta test of HBO Go didn't last long — the cable company has just announced that the streaming service is now available for all its customers. There's free iPad, iPhone, and Android apps to download and you can also stream content through the HBO Go website. The service continues to make all of HBO's shows available for streaming as well as a selection of movies, comedy, and sports. This announcement comes on the same day that Showtime made its content available to Verizon's FiOS customers — it's a good day for premium channel subscribers, as long as they're customers of these specific cable companies.