I was 18 or 19 at the time (I'm 26 now) and I had just awakened in the middle of the night (I don't remember exactly what time it was). When I opened my eyes the first thing that I saw was the floor length mirror on the wall directly across from my bed. What startled me though was what I saw in the mirror! Standing in the hallway looking into the mirror at me was a man. He appeared to be in his mid to late 30's, had a slim build, dark hair, and was wearing a black suit and a white shirt. He appeared to be solid as I could not see through him. He seemed to notice me looking into the mirror at him and he then quickly turned and walked into the bathroom. Since I had just awakened and was not thinking clearly, I quickly got out of bed and followed the man into the bathroom.When I went into the bathroom naturally the man was nowhere to be found. I can't say for sure if I actually saw a ghost or if my mind was playing tricks on me in my half-awake state. This experience is open to interpetation and I will let the reader form their own opinion.