I'll start in chronological order.
April 20th 2010 - 0130 Hours CST (1:30 AM)
I am down in the basement of my grandparents' house, they are asleep, and I am lying on the floor watching television. I hear what was fast heavy breathing right behind me. I figure it was either the television or myself, but when I started to breathe through my nose (calmly, no noise) and turned off the television, I still heard it, I looked behind me, there was nothing there, thinking it was maybe that I was tired, I headed to bed.
April 21st 2010 - 2330 Hours CST (11:30 PM)
I was using my computer in the basement to complete my homework for college, I had my headset on, with music playing, the headset is a Razor Barracuda (I think), anyways, I started to hear breathing again, but this time it was slower and heavier, to my left, I took off the headset, and the breathing was softer, with myself breathing through my nose again... I put the headset back on without the music playing, and the breathing got louder. This continued until I headed to bed, at about 0200 Hours
April 23rd 2010 - 1930 Hours CST (7:30 PM)
I was sitting in my grandfather's recliner, watching television, I heard footsteps coming down the stairs, however, no one else was home at the time, I looked to see who was there, and there was the black mass just standing there, when I looked away and back, it wasn't there. You can imagine how that would make you feel.
April 24th 2010 - 0000 Hours CST (12:00 AM)
Once again, I was doing homework for college, when I went upstairs to use the restroom, I came back down, and my monitor was off, which I didn't turn off. I turned it back on, the screen started to act weird, and shut itself off again... This monitor is relatively new, so it wasn't a hardware or cooling issue, I turned it back on, and continued on with my homework until about 0120 Hours that morning, all the while I heard the breathing... Same heavy slow breathing.
April 26th - 2115 Hours CST (9:15 PM)
I was in the basement storage area, looking for a computer part that I needed for a friend, when I was in there, I felt a cold touch on the back of my neck, and the heavy breathing again... I went out of the storage area to head upstairs.
April 26th - 2330 Hours CST (11:30 PM)
Several things happened again, my computer shut off several times, when it wasn't overheating (Side of case was open, power supply and other parts were new), I kept feeling a light breath on the back of my neck, over the course of the night, all the while hearing the breathing noises...