Free for today only (July 5th) from NOOK Video @ B&N:
Episode 1 of the Outlander series based on Diana Gabaldon's popular time travel romantic fantasy,
details in the NOOK official blogpost. Apparently you can watch NOOK Video online in your browser if you don't have a device, although YMMV as I've never bothered to try.
ETA: apparently browser-watching is another one of those things that died with the old site. But you can use their video app on various Android & iDevices.