We've got digital cable (the box doesn't have any buttons) so without the changer, it's impossible.
Gman, I've already done that SEVERAL times, turned the batteries the wrong way, even put in dead ones. My dads getting a little clever, so I think I'll try this one on him tomorrow.
What real man wants to put down his beer, set aside the chips, and GET UP to go change the channel. I don't think by dad would be able to.