If you think snapping your wrist to serve in Wii Tennis is laborious, you're certainly not going to like this newly announced product. The jOG for Wii (as well as PS2) only allows gamers to use their joysticks if they're physically jogging.
The device works by connecting to your controller through a cable and then being attached to your pants. Afterwards, the ability to use the controller's joystick rests on whether or not you're jogging. We don't suggest using this device at a crucial point in a game, but if you must, don't get tired.
The jOG-S21 will be available in the near future and will cost around $25. In the meantime, here's a video demonstrating how the jOG works.