It would have been on within the past 5 years I think, and was on NBC.
Unfortunately (or maybe fortunately) I only remember only one of the stories, but it was a great one:
A military guy just lost his wife and kid in a divorce and he’s rather bummed about the whole thing. He suddenly gets a phone call and is summoned by the military to some desert where a mysterious dome has suddenly appeared. Inside the dome is a peaceful country setting with a cottage and stream and tire swing, and living inside is a woman, her son, and her father, who liked to relax on the front stoop.
The military examines the dome and is seeking to learn about it when something somehow falls through it into this alternate world. Based on this, they set up a machine to regularly shoot ice cubes into the dome to see if they can determine the timing of when the dome allows passage. Of course during this whole time, the protagonist sees this simple life with a happy family and longs to be with them.
At one point, an ice cube slips through the barrier, and as it does, the military guy runs into to the dome walls and slips through onto the inside. He meets the family who seem to be shocked, but pleased to have this man among them. As they gather around him, their jaws distend and with giant fangs, they tear the man to shreds, eating him.
The story ends with the boy banging on the dome walls with the former military guy’s leg bone, peering outside. The old man reads from some black book, and just like that, the dome vanishes.
It is unlikely that I will ever be able to get this on DVD, but I found this particular story very dark and enjoyable and would love the chance to see it again.