This fellow showed up in the basement recently. It's about 5 cm long.
I believe, based on some photos at this rather good spider website, that it is a Grass Spider (Funnel Weaver) of the genus Agelenopsis. Harmless, but frightening when it surprises you. We find these in the house all the time.
Apologies for crapness of the photo - the camera was being a bit stroppy. No user error at all. Really.