In celebration of National Streaming Day on May 20, Roku Channel is offering the following free premium content on the Roku Channel through May 20.

-SHOWTIME | Season 1 of Billions, The Affair and Ray Donovan
-EPIX | Season 1 of Get Shorty
-FOX | Episodes of The Four, Beat Shazam and The Love Connection
-Smithsonian Earth | Episodes of Guardians of the Wild, Casey Anderson's Wild Tracks, The Secret World of Animal Sleep, Wild Castles and Arabian Seas.
-PeopleTV | People Wedding - Justin Hartley, episodes of Couch Surfing and The Perfect Fit
-Lifetime | Episode of Little Women: LA
-HISTORY VAULT | Episodes of Ancient Mysteries: Secrets of the Romanovs, Third Reich: The Rise
-HISTO | Episode of Truck Night in America
-A&E | The Murder of Laci Peterson

Just go to the Roku Channel on your Roku (no log-in needed). Select the first item (it mentions National Streaming Day). Then choose from the programs above.