Also known as “Barn Funnel Weavers”, “Sink Spiders” and “Those Monster Hairy Spiders That Run Like The Wind”. The Backyard Arthropod Project has more.

The good news: they'll keep your house clear of pests, and it's also apparently hard to make them bite you, even if you try. Readers in the know can earn extra spouse credits with that bit of info, just take a quick look first and make sure it doesn't have 2 really big eyes (wolf spider - use a jar) or 6 eyes/3 eye pairs (brown recluse possible if you're east of the Rockies, danger).

Two things I found most interesting: (1) Tegenaria domestica are supposed to live in houses, and don't do well outside; and (2) The author's speculation that they may be speciating and evolving.