on the slightly OT front but dealing with resuming. I really like what Disney did on the BD set for Lost.

They have this thing called "season play" and it keeps track of where you are, it is nice not to have to remember what episode you have reached

Note: on the annoying side of it you are also forced to see the previews and the introduction every time you start (at least for the first disk –I have not started the second one yet)