17

cans of PAINT! I just went around and counted all of the full and partially used cans of paint/primer in out house. Bear in mind, this 17 doesn't include the 20+ cans of paint that came with the house and currently reside in the basement.
This pretty blue is waiting for the kids bathroom. It has been all primed - but needs a coat of ceiling paint. For whatever reason in the pic below, the wall looks blue - it is actually just primed.
I think we might as well get stock in Kilz primer which we are using on the future kids bedroom.

We decided to paint the ceiling white to cover up the corrugated tile looking things. The plan is to go back and fill in the brown around each of the tiles. Needless to say, this is going to be a rather tedious process....only slightly more fun than the few hours I spent cleaning the walls in this room - 30 yrs of dirt removed!

These 8 cans are the remains of the master bedroom and bathroom painting. We also have a few cans of ceiling paint and some paint for the trim to use.

Finally, here are the supplies currently sitting in the living room. The lady who we hired to paint the living room and family room is using these.

Here is her work so far. The bay window had some water damage, so we are hoping that the Kilz will keep this looking good for a while.