They are all over my neighborhood. Some are very nice. One of my neighbors who owns a couple of car dealerships has several of these inflatables plus (i) a topiary horse hooked up to a santa sleigh with an inflatable santa in the sleigh, (ii) a herd of reindeer frames with lights, (iii) a topiary longhorn (like Bevo for UT) with a Santa sleigh attached and stuff Santa in the back, and (iv) in addition to normal lights, an American flag in lights on the side of their house. It is a huge house and actually looks fairly nice.
There is another house in the neighborhood that used to have Rosewell type aliens (they have a great Halloween display) pulling a sleigh. They have cut back this year to tasteful flying saucer decorations in the tree and no aliens.