The void.
Mark sat in the living room, watching TV. It was an old sit-com about a white family that adopted a black kid, and all of the standard racist humor that results.
As Mark reached for the clicker, he noticed a small black spot, like some of the pixels on the TV screen were dead. He got up and walked over to the TV, and he noticed something else- the spot was not on the TV screen, but floating a few inches in front of it, and that it was growing. It went from a period at the end of a sentence to a dime in about a full second. In another second it was larger than a quarter. Mark backed off, frightened, as it grew to the size of a dinner plate, and then an extra large pizza. It stopped growing after that. Mark peered into the void. In it, he could see everything and nothing. He felt what infinity feels like, it was like all of time itself was compressed into a single instant. Mark was not a religious person, but looking into that void was the most spiritual experience he had ever had, and could ever imagine.
He knew he had to share it with someone.
He called his sister, Susan. He tried to explain to her the wonderous thing in his living room, but words failed him. He begged for her to come over. Susan said she already had plans this evening, but she could be there in the morning, see his miracle, then they could go to brunch.
Mark spent most of the night peering into the depths of the infinite blackness. Every molecule of his body became self-aware, and became one with the air around him, the house, the city, the world. He felt himself become one with the the universe.
By 3:00 am, Mark fell asleep. He woke up when the doorbell rang. He went to the door, and let his sister in. They exchanged pleasantries, and she looked at the large flat black disc floating in his living room.
... but now, it was just solid black. It was not the infinite nothingness, it was just nothing.
Susan said it was truly remarkable, and asked how he got it to float like that. She tapped it with her finger. It was solid. After she tapped it, it fell to the floor, leaning on the coffee table. She then began recommending places to go for brunch.
Then, Mark said...
"I promise Susan, the void was better yesterday."