Yup. It's called a House Centipede. The picture I posted is from the Harvard archives. We've just moved so my camera is still packed. But it looked just like that, only bigger and yuckier. Thank god for upside-down canned air: it was the only way I could slow it down enough to catch it. We do, however, have a catch and release program in effect at this house, so he (she / it) is now living happily (?) across the street.