Creepy Crawlies

There are two types of spiders in my house. There are the web spinning kind, that more or less keep to the top one foot of the ceiling. There's always a cobweb or two floating around up there, almost invisible against the white paint. Occasionally I'll leave them alone, until I do something like walk into a web, then it's time to throw down. Out comes the vacuum and I start sucking them up.

One time I was staring at what I thought was a speck of dust on the ceiling of the hallway. Then it moved. Then I realized it was a microscopic baby spider. Then I realized there were dozens and dozens of them running around up there, probably just having popped out of some egg sac somewhere. Blech. The vacuum earned its keep that day.

Then there's the other kind of spider. I still don't know what the hell these things are, but they creep the shit out of me. They don't do webs, probably because they scare their prey to death. They are gigantic, and hairy. They are often found in bathtubs, skittering around trying to find their way out. What really freaks me out is knowing that for every one that I see, there are probably ten more hiding out in my shoes and my underwear drawer.

Think I'm overreacting? Take a look at what I saw hanging out on the wall on my way downstairs.
I stuck the dollar bill on the wall for scale. People never believe me when I say, "Oh, including legs it was about the size of my palm." Need more? Can do! That's what macro settings are for.
Not good enough? Let's go in for a close up!

Look at the size of that thing! It thirsts for human blood!

I seriously need to find out what kind of spider that it. If it turns out it's venomous I may have to cleanse the house with fire.