So, in addition to the spiders and cobwebs just outside my front door that we've yet to hose off the walls since we moved in, today we found a little bat napping up-side down in the eves over the door!
I figured the little guy would take off to go hunting at dusk, but then realized that the porch light out there might keep him from thinking it was time to go. So, after it got dark I turned out the lights for a few hours and sure enough, I just checked on him, and he's gone.
Hopefully leaving the light on will discourage him from coming back in the morning. I'd hate to have to hang aluminum foil all over my entryway to scare him away.