Showtime was already available through Amazon's Channels program alongside NBC's SeeSo comedy streaming service, PBS Kids, History Channel Vault, Starz and more. As you might expect, any of these networks that you link to a Prime plan are available though the retailer's video app on phones, tablets and connected TVs. Owners of Amazon's Fire TV, Fire TV Stick and Fire tablets also get easy access to any of the aforementioned streaming add-ons.

The best part of the news? HBO and Cinemax are available today for Prime customers. Just head over to the Channels page to get started.