Hurray, I got the one spark plug out. I took some advise I found while googling the problem. So, I warmed up the engine and then attempted to remove it. It still was more difficult than the others to unscrew, but it did come out. No galling of the threads or aluminum chunks, so I guess its just tight.
I ended up regapping all 3 plugs and putting them back in. However, they really should be replaced. The ground electrodes have a concave imprint from wear. I know they're indexed plugs. So, I assume this is a Honda dealer part only and I can expect to pay through the nose for them? I think I saw $23/ea on IC.
I also noticed this bracket. What is it supposed to go to?
Next up I pulled out the PCV valve to clean it up. It was bit caked.
Then I removed the EGR plate. It was kinda clogged... completely. Bucking issue definitely found here.
Here it is all cleaned up. I went at it mostly with a small flat bladed screw driver. Once most of it was carved out, I cleaned up the remaining bits by blasting it with carb cleaner. I also cleaned up the mating surfaces with a brass scraper.
I also went ahead and pulled the EGR valve off. It looked pretty good. I cleaned the bottom of the valve and blasted the inside with carb cleaner a little, but I didn't soak it like some do.
These are the extras that came with the car. Having the service manual I'm guessing is going to come in quite handy. I guess the starter will just go on the shelf of parts.