Comcast has now jumped into the downloadable video content game with the Fancast Store. It’s a lot like many other video download stores in that you can either rent or buy movies and TV shows, it requires you to install proprietary media management software in order to download and view your content, and it’s not Mac compatible (you can, however, order content from a Mac and download it on a PC later).
Purchasing content allows you to download it on up to three computers, while renting content ties you to whichever computer you use to download the content. Rented video files must be consumed within 30 days and, once initially played, must be watched within 24 hours or they’ll expire.