Eariler today our cats were playing with a bug that had gotten into the house.  We thought it was a fly, but when I took a closer look at it, espeically as I took it outside on a piece of paper (it was still alive), I realized it was no fly I ever saw before.  I didn't take a picture of it (didn't think of it at the time and I was about to go out, so didn't have time anyway), but here's a description:

Body shape:  overall seemed to have the body shape of fly, was no more than 1cm long.
Body color:  mostly black, but had very thin 'bands' (of hair) of light yellow/tan on it's abdomen and on the edges of part of it's hindlegs.
Wings:  single pair from what I could tell (it never tried to fly when I was looking at it), which were a light brown/ochre color
Antena:  straight from what I remember, nothing fancy about them.
Mouthparts:  mandibles akin to a bees or leaf cutter ant.
Stinger?:  not one that I saw, but bee stingers are not visable either until they use them
Eyes:  black and I want to say oval/bee-like.

I did try to look for it on a few insect sites, but got no hits that looked even close.

Anyone here have any idea of what it might have been?