If the answer has to be certain (was it paranormal or not), then I would have to say that I didn't. But I had some weird, disturbing experiences in my childhood house, when I was living in Paris suburbs.
One night, my brother and I heard a big shattering noise downstairs. We came down in the living room, expecting to see some glass on the floor but it was my mother's keys that fell off the dresser. It could just have slept but the truth is, it was far from the edge, and no one was there when it occured. We also noticed that a picture of brother fell too, and two scratches coming from the corner of his eyes (on the picture) formed out of nowhere. We were all sure it wasn't there before.
Some other things happened like strange noises we couldn't quite explain, and I could swear I saw a little boy's shadow in the corridor, one morning. There was also that baby's footprint too, that appeared on the bathroom's furniture. We didn't have any baby around for years when it happened, and it surely wasn't there before, either.
I'm pretty convinced that there are things that we just can't explain, and in the other hand I tend to freak out and try to find a logical reason to these things when it happens. What do you think about it ?
Thanks to @missy and @rambo for this blog homework ^^