Yes to an extent, Comcast will let you rewatch a missed show using on demand and there is the Xfinity app so you can also watch on the go but they don't last forever they usually tell you when the movie or show will expire. Of course for all this you pay a monthly cost for cable which for me bundles with TV Internet and phone for about $120.00 a month.
plus xfinity is really good about supporting all the various network apps like Hbo Go, Showime, etc...