Dish's Sling TV streaming live TV service is now available to anyone interested, and you get a 7 day free trial when you sign up. You do have to give them credit card info to get started, so if you don't cancel you'll automatically be billed $20/month (plus tax) for the core service after a week.
I tried it and I have mixed feelings so far. The good news is that it's a way to get a selection of live TV channels for not a lot of money and with no contract. The bad news is that it still feels a little incomplete.