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SportsArt Fitness S770 Pinnacle Trainer

Instead of burning electricity while you burn calories, this Rube Goldberg-looking exercise machine generates its own electricity while you work out – you don't have to plug it in, which means you can still exercise in a hurricane-induced blackout. Its designers at SportsArt America claim the S770's dual-action backward/forward and medial/lateral motion burns more calories and engages more muscle groups. But this mechanical jungle gym also monitors heart rate and, most importantly, includes a bracket for an entertainment device to distract you during your no-pain-no-gain electricity-generating activities. Too bad you can't power stuff in your home during a blackout with it. Especially considering its $8,500 price tag.