Nintendo's new Wii isn't perfect, but it's clever, cheap, fun — and downright aerobic

I've only spent an hour getting to know the Wii, referred to from here on out as my New Best Friend, and already I'm tired. Not tired of my NBF, mind you, but physically tired. I've been pitching fast balls and lobbing serves across the tennis court. My right arm is limp, like an overcooked noodle.