Nintendo has officially announced Rock N' Roll Climber, which uses the Wii Balance Board in conjunction with the Wii remote and nunchuck to simulate rock climbing and rocking out.
Rock N' Roll Climber is just what it sounds like: a rock climbing game with a heavy metal heart. Players use the Wii Balance board to shift their weight, will the Wii remote and nunchuk are used to grab handholds. And the rock bit? Here's an explanation direct from Michael McWhertor, liveblogging the Nintendo GDC keynote: