cineSync

cineSync enables multiple people across the world to efficiently review visual media, from static images to movies.

With cineSync, what you see is what others see: experience synchronised movie playback across everyone's screen with frame-accurate precision. Share your vision by simply drawing on the screen with your mouse, like a real-time shared whiteboard (with full support for pressure-sensitive Wacom tablets).
The price quoted ($99 USD) is the per-month cost for two users. Other pricing info can be found here.