If you have more than one or two streaming subscriptions going at any one time, the easiest way to manage subscribing and unsubscribing from them is to use an app. The only app in the market that supports resuming subscriptions in addition to cancelling them is ToggleTV -- so be sure to head over to claim your place in the beta now!
Another great option is Rocket Money, which supports cancelling any monthly recurring service, but it doesn't support resuming them when you want to watch again. So with Rocket Money, you'll need to go manually revive each subscription when you want to start watching again.
For that reason (and more!) we'll focus here on how to do it with ToggleTV.
Not ready for ToggleTV or Rocket Money? No problem! We've included a handy guide here on how to cancel each of the streaming services.