UPS has been good to me in that regard. I once had a package that needed signature that I wasn't home for. He left the slip on my door. About six hour or so later, towards the end of the driver's shift, he was driving by my house again while I was getting home. He saw a car pull into my driveway so he stopped and brought out the package and gave it to me while I was getting out of the car. Said "I tried to deliver this earlier and nobody was home." Very nice of him to 1) remember and 2) actually care.

I have an aquatintance who works at UPS and loves it. YMMV though.