TiVo. I love that I can fast forward through commercials and have all my favorite shows waiting for me when I lie down on the sofa (and fall asleep!)
I probably wouldn’t have gotten one of these when we did but our son got us one for Christmas many years ago. He had it all set up and ready to go on Christmas morning.
At that time, I had no idea of its capabilities but now, I don’t think I could live without it!