One would be able to look up a complete representation of the current known state of Mad Men, all known airing dates in all countries, places where it might be available to (legally.) steam in your jurisdiction, etc, etc.
These are all the features of a normal API. As well as access to the above, you could (selectively) register for updates to be pushed to a URL of your choosing when there are additions or amendments to the data held about the show. (or all shows, or all shows matching your criteria, etc)
These are all the features of a normal API. As well as access to the above, you could (selectively) register for updates to be pushed to a URL of your choosing when there are additions or amendments to the data held about the show. (or all shows, or all shows matching your criteria, etc)