My son and I were in our vehicle at the intersection of East Wellesley and North Crestline at about 6 PM on 10/31/08 in Spokane WA and we saw a strange object way up high in the early dusk sky due north and slightly west of us for about 5-6 minutes before it vanished behind some clouds. Its behavior was strange because it did not move like a helicopter or plane and there were no lights of any color.

The object stood out like a blimp but it was not shaped or colored like one.  It was too high up for a kite and if it was a kite at that height it was too large in size.  The object was very dark black and it moved in a somewhat hovering manner almost like a large bird but at that height and distance from us it was too large in size for a bird.  The object shape was somewhat like a boomerang, normally after seeing such an object I would be writing it off as something natural but then after 10 minutes there was no sign of the object in any direction from where we first observed it.
I thought that maybe if anyone else made a report to you that my information might help, I am sorry but I had no observing or recording equipment with me at the time.