This is my first story. I've read most of the postings here. This happened in 2003 in my first house here in Texas. It was a small but cute two-bedroom house that was almost exactly 100 feet from a highway overpass. I was married and we had two very young children. The way the house is situated is if you are walking out of the bathroom if you look forward you will see out the small windows in the front door. They were three small windows stair stepped down the door's upper third.
During the night it is very customary for me to go check the kids and visit the bathroom, then finish my round by returning to our bed. I must also add that I wear glasses but, remove them at night and make my rounds without them.
One night I was doing my rounds when a movement in front of me made me think, "Oh, Mack (made up name) needs to go to bathroom." I was about to step aside for him. I finished looking up and realized I was able to see the streetlight shining through our front doors' lowest window through his shoulder. I sucked in my breath and flipped on the light switch. He was gone. I clearly remember feeling that is was my husband, that it was his shape and movement. I wasn't scared more shocked. I still shouted for my husband (still in bed) to turn on the bedside lamp, because I was too chicken to cross the short hall in the dark.
We have since moved but that was my first but not my last experience with ghosts. I am just so very glad that I have always been honest with my self to the point where I knew I wanted to see a ghost but knew if I did, I'd probably wet myself. Thank the Gods I had just finished doing that before it happened.