It may not have live TV streaming yet, but Comcast has been at the forefront of expanding the cable TV experience to phones and tablets with its Xfinity app
and pushed further recently, updating the iOS version
and releasing an edition for Blackberry phones. On Blackberry it brings the usual set of features, including Comcast.net email access, remote DVR scheduling and trailers for VOD selections. On iOS, v1.60 adds a "previously played" button that can return the TV to previously watched channels, or start playing VOD content on the mobile devices
right where you last left off. Check the official blog for more details or just download from iTunes or Blackberry App World.