DLO pretty much has this iPod dock thing down pat - they introduced a video playing dock that could do navigation on the TV when everyone else whined and said, "You'll have to get up and navigate on your iPod for videos".
Now they have an RF remote - that's the kind that can work through walls - that has an onscreen display with the familiar iPod menus. So if you're playing poker in the kitchen and bumping Snoop in the living room, you can navigate to that Ghostface track about Hold 'Em without leaving your pocket rockets. That's just one possible application! To explore more you'll have to shell out $129.99 for the HomeDock Muisc Remote.
Product Page [DLO]