Perhaps a sac spider.

Swat it.

While I can appreciate the environmental benefit of spiders outside the house, I would not say they are no threat to you (inside the house). Spiders bites can be very, very nasty. Most spider bites are caused by unintentional contact. The worst bite I very got was a painless spider bite that got infected, caused necrosis of tissue the size of a baseball and left a scar that lasted for years.

For every spider you see in the house, there are probably several dozen you do not. They are everywhere. I tend to agree with Photo Synthesis.....the vast majority are completely harmless.

Put a clear jar over it, slip a sheet of paper between it and the floor, turn the jar over while keeping the paper on the end and let it go outside.

Personally, I don't like spiders either. Sure, their bites can pack a painful punch, but they would only resort to that in self defense. They don't come inside all of the time, but they do every now and then. My cats are usually the first to spot them. Once I find them, I do as Embothrium suggests, and catch them with a clear jar or cup and a piece of cardboard. From there, they get released back outside, far away from my house. There was one time I found a black widow had spun a web in one of my doorways. Since it was a door that I never used, and the web was on the outside, I just left her alone.

Taking a spider outdoors, whose natural habitat is indoors, will result in the spider returning inside the house. Take it to another structure or else far enough away that it will go to somebody else's house.

If it can be identified as a dangerous biting spider, ^swat it^.

That last photo definitely looks like a Huntsman Spider. There are well over a thousand species around the world, some of which get up to dinner plate size. Generally they're quite harmless to people but do have large fangs so can produce large punctures if handled roughly. They don't make webs like a lot of other spiders so when hunting wander around a lot, hence sometimes getting into houses during their travels. When I find any species of spider inside I always catch and release outside. Never bother to take them far away, there's thousands of others not far from the door some of which will somehow find their way in anyway.

It looks like a sac spider to me, as well. My first thought, however, was brown recluse. In my personal experience, brown recluse are golden (blond). I had a little cottage in SC that had quite a population of them and I ended up being bitten before I vacated the premises so that it could be treated.

I was quite surprised at their color.

The majority of "spider bites" are misdiagnosed bug bites. There are definitely some serious ones out there, no mistake, but then one is still more likely to get a health risking bite from a tick or mosquito.

Interesting, Rhizo. Most recluse are brown from what I have seen and heard. Difficult to tell from the photo, but doesn't look like a recluse to me. Body form is wrong. Most likely a sac spider.