Skipping TV Adverts
For some reason I can't get my TiVo to accept a widely-published hack that allows skipping forward 30-seconds at a time, but I like that the device is smart enough to recognize when a show starts again after commercial or when there's a change in the action when I hit "play" while zipping ahead in fast forward. It instantly jumps back to the moment when the show or segment starts.
At first I thought this had something to do with the fade up from black between advert and program, but it also happens mid program when there is a cut between scenes. Well, however it works, I rather like it.