Hello, masterogrp!
First, I want to make it clear that I take your report seriously. I understand that this is important to you, and in suggesting some normal explanations I'm not trying to dismiss what you're saying.
The good news is that these aren't signs that you're crazy. I've had most of these things happen to me.
Let's consider these one by one.
1. The porch light. I frequently am certain that I did something, but examining the evidence I realize that I hadn't. So that sounds normal to me.
2. The shake in your bed at 10 at night. It's normal for people falling asleep to wake up convinced that they've felt a violent movement. It's called a "hypnic jerk", and for me at least it's gotten more common as I've gotten older.
3. Closed captioning coming on with gibberish. Closed captioning is sent inside the normal TV signal, and so any interference can cause gibberish. Not a sign of haunting.
4. Handslap on couch– sounds again like a hypnic jerk.
5. Cat running down the hallway and the light cover falling. Sounds like, perhaps, two unrelated events that happened one after the other.
6. The hall closet. There may be a source of vibration (such as a car going by outside or a laundry machine turning on) that's not normally obvious, but is enough to cause a number of doors on hinges to swing. That's hard to diagnose from here, but there are a number of potential normal explanations. We might be able to give you some ideas on how to investigate.
7. Cat watching the entrance to the kitchen. I'm going to ask my sister-in-law the veterinarian and cat fanatic about this one. There may be something in that area that makes a noise above our hearing range.
8. Shadows moving. It's quite normal to see shadowy movements in low-light conditions. If you are frequently seeing shadows that don't have an obvious source, then perhaps we can help you investigate further to see if there might be another mundane explanation.
9. Getting scared in the garage. There are plenty of things in the average garage that might influence someone to be scared: infrasound from a water heater or furnace, odd smells, and poor or flickering lighting.
Once again, I'm not trying to dismiss your claims as unimportant or silly. I realize that feeling that there's something going on that you don't understand is nerve-wracking. It's tempting to grab onto any explanation, even a supernatural one, just to make things less confusing.
You might want to listen to our podcast #6: "The Third Option", which deals with a number of the normal factors that can lead to paranormal reports.
I hope that your situation improves, and I wish you good luck.