Alright, I just went and bled the system again. I got some air out of the driver rear, a lot actually. Took it out and it was stopping better. Then I remembered that it has been stopping like crap since I put these pads on. So, I decided to bed them in again. By the time I got home it was kicking in the ABS and stopping pretty good.
So good in fact, I think something fell off. I made a stop and then I heard the sound of metal bouncing on the ground. I got out and found this:
Did I just run over this or does it belong somewhere on the car?