A couple weeks ago was replacing one wall mounted bathroom light fixture with two. Got one of those special 48" flexible drill bits to drill through studs and pull wire through. Tried drilling the hole from the side with less clearance, so the bit didnt bend as much as it should have. Ended up drilling a 1/2" hole right through my siding. Did a quick patch and will have to replace a chunk of siding now in the spring when it warms up. Fortunately the hole was right under the overhang so I didn't have to worry about making it totally waterproof.