I tried my hand at video mapping to the front of my house this year. Turned it into an old weathered house as a backdrop to my graveyard. The actual projection picture is a captured video frame so doesn't look as good as it does in person. The first picture is the graphic I created in Photoshop, the second is the house its projected on having the shutters prepped with custom covers, you can see the projector booth in the lower left corner, and the last is what the projection looks like.
Actually had a guy ask if I painted my house like that just for Halloween, I had to point out the projector setup.
Learned some lessons from doing it and intend to add ghostly animations in the windows and bats flying by and things like that for next year.