In Pictures: 15 coolest gadgets at Macworld/iWorld Expo

The Macworld | iWorld Expo in San Francisco is an Apple lover's Disneyland. Ashton Kutcher kicked things off by plugging his movie "iJobs," but the main attraction is the showroom floor where vendors display their wares, everything from iPad and iPhone add-ons to iOS apps to Apple enterprise gear.

Godin Guitar

The musician is ripping tunes on a Godin guitar that's connected to a nearby MacBook. In turn, software records the music live, without any noticeable lag. He says it's the only guitar with built-in components to connect wirelessly and integrate with the software. Then he strolls off a ways, still playing music, still showing up on the MacBook. Software and guitar cost: $995.

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