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Collection of 2007's best Gadgets, Goods and Gizmos Remote Patrol Be your own housesitter. The Wi-Fi chip in this robot lets you maneuver it-and its webcam-from any Internet connection. If you catch Fido on the couch, yell "Off!" through the 'bot's built-in VoIP phone. Erector Spyke $300; erector-sets.com Ringing in the Rain Keep talking through clumsy mishaps and dips in the pool. This cellphone survives in up to three feet of water by protecting vulnerable hinge areas with O-ring seals and water-resistant speakers. Casio G´zOne Type-V $300; verizonwireless.com HD for Free Your cable or satellite company would be more than happy to fill your new HDTV with high-definition channels (upping your monthly fee in the process), but in most major markets, all you need is a special antenna to pull in the free over-the-air high-def signal broadcast by your local networks and public channels. This USB antenna doubles as a DVR, plugging into your Mac to record free ...