Here are my stories:
I worked at a bagel shop in high school. Some of my co-workers said the shop was haunted by a female ghost who would whistle in the morning or turn the blender on when someone was counting the money out back while closing. One night, a woman came in and asked about cream cheese. I said, "We have 8 oz. and 16 oz." She said that 8 oz. was way too big, but a 1/2 pound would be perfect. Even though 8 oz. = 1/2 pound, I smiled and gave it to her. When she was gone, I looked around to see if anyone was in the store. No one was there. I mentioned to my supervisor the incident. We both heard a woman laugh. We looked around and no one was there! My supervisor and I freaked out.
I babysat overnight at this woman's house. She had an 18 month-old who would sometimes get up in the middle of the night. The woman told me that when the baby did that to tell her, "It's too early, Susie! Lay back down!" This happened twice. The third time, Susie let out this horrific scream. I ran in, and she was pointing to the back of the crib. I thought the cat must have gone there, but nothing was there. I said, "Shhh...Sweetie, there's nothing there!" Susie kept pointing. I took her out. She would not go back in the crib that night. I thought it was odd. When I told the parents, they just looked at each other. The mother said that it might have been the cat. However, I knew there was something they weren't telling me.
My cousin's kid has seen his dead grandfather, and once while my cousin was changing his son, the baby started laughing. My cousin asked him what was so funny. The son said that the lady was funny. My cousin asked, "Which lady?" Son said, "She's right there!" and pointed while laughing.
My friend Tim died in a car accident a few years ago. I wrote to my best friend from college, Joe, who was in England at the time. (I was in Canada.) Joe did not know Tim. I dreamt that Joe wrote back to me, and I remembered little snippets of what he wrote. I woke up and checked my e-mail. There was nothing. I went to make a cup of tea, and then thought, "Oh! I should e-mail so-and-so before I forget!" I logged back in...and there was an e-mail from Joe, complete with the little snippets that I remembered! It gave me chills because these snippets weren't generic, like "Hi, Mopsy!"
A few days later, I was bawling my eyes out in the bathroom, and all of a sudden, I heard a little voice in my head say firmly, "Mopsy, please stop. It'll be OK. I'm fine. No more tears." I stopped, sniffled a few times, and that was that.
And maybe this is just me having a vivid imagination, but I sometimes have these weird dreams where I relive the last moments of people's lives who have been murdered. I don't know if they are real people, but it's so weird because my point of view changes several times.