I found a ROKU channel online at the Hallmark Site. It's called Hallmark SpiritClips. I've subscribed to it (for the year at 35.99, which is 2.99/mo). My wife loves all the movies that Hallmark shows and produces.
You subscribe to the channel online, then, you add the channel to your ROKU store through the hallmark site that links to your ROKO account, then you select the channel on ROKU TV, then with the code ROKU TV gives you, you enter that code online at the Hallmark site, and you're good to go!
Enjoy family-friendly live action, animated and documentary films
Exclusive access to Hallmark Hall of Fame Movies and 100's of award-winning SpiritClips original short films
Share unlimited SpiritClips Films and ecards
Watch online, stream-to-TV with Roku, Boxee and more, or on iPhone, iPad, or other supported devices.