Though this isn't the first experience I've ever had, this is the one that spooked me the most.
I was home alone (which totally figures). Parents were both at work and my younger brother was out and about with some neighborhood kids. I suppose I wasn't completely alone seeing as my blonde and white husky named Jenna was with me as this all took place. I had been feeling particularly tired thanks to the busy day I had the day before and the little sleep I had gotten that night. I decided to relocate from the living room into my room, Jenna following me as she usually does. I went to the bathroom, leaving Jenna out in the hallway. When I was done and opened the door to the hallway Jenna was standing outside of my opened bedroom door, her fur standing straight up while she growled. Thinking there was someone else in the house I carefully peaked my head around the door frame to see nothing out of the ordinary. Thinking Jenna was simply afraid of the dark I took a careful step in and called her to follow but she did not. As I turned around, from the corner of my eye I could have sworn a shadow detached from a living being darted into the far corner of my room. I quickly turned around and saw nothing. Despite this I was a bit shaken. I started to convince myself that my eyes were simply playing tricks on me because of my tired and sore state. Jenna, however, was now barking and snarling at some unseen thing behind me. Then something odd happened- a sudden change in temperature occurred around my back. I turned to face it but still could see nothing odd, but it was still very cold in that small spot. I had this feeling of being watched. Like someone was giving me their complete undivided attention mixed with some sort of vibe that carried out a creepy- even angry- feeling. I was going to reach out and wave my hand over the cold spot, but Jenna must have found this threatening to me- For she literally leapt into my room continuing to snarl and, would have run straight into me had I not jumped, but instead ran through the area where the cold spot was.
The feeling of being watched vanished, as did the previously cold spot in my room. Though with this completely calm and silent setting, I started to get the chills. I was slow with climbing under the covers of my bed and was just about ready to fall asleep when my TV decided to turn itself on. I do have cable, so I was pretty confused when displayed on the screen was simply white-noise (Static or "snow" as some people call it). I sat up, Jenna deciding to jump onto my bed and sit alongside me. We both kind of just stared at the screen for a bit until I was sure I could see a face pieced together out of the blurring white specs that flickered inside the screen. I lifted my remote and just as I put my thumb over the "power" button this loud, high pitched scream came from my television. Not the kind of cheesy horror-film screams you hear in movies either. This scream was one of complete fear and anguish twisted with anger and agony. It was so loud my ears were still ringing ten minutes after the TV had clicked off.
On occasion my TV will still do this. I refuse to simply ignore it and walk out of the room because of the way I interpret the pained cry. I've tried asking questions after the TV turns off and have yet to receive any answers.