I have several 'ghost' stories, but I'll start with this one.
One Christmas Eve night, my little black kitty, Chloe, got very ill. I didn't know what was wrong but I knew she was dying. I took her to an animal emergency clinic - at midnight as Santa was making his rounds, I was driving like a bat out of hell with blood samples on my way to a lab that would run a bunch of tests in hopes of saving her life.
Sadly, she passed away (she got into some anti-freeze somehow, and her kidneys shut down). I had been up all night, so I laid down that afternoon (Christmas Day). Just as I shut my eyes, I saw her. There was a large door with an extremely bright light coming out of it and she was running towards the door as it was slowly closing.
You see, the family joke about her was that she was always on the wrong side of the door. If she was inside, she would sit by the back door and meow to be let out. If she was outside, she would sit by the back door meowing to come back in.
She made it inside the door just in time.

WW