This robotic sentry can be controlled by any remote device capable of browsing the internet, so if you really wanted, you could monitor your home from anywhere in the world.

The sentry can take still pictures as well as stream audio and high-resolution (640 x 480) video in MPEG4 format, and then email both to you. You can program up to 10 paths for the sentry to patrol. While doing its patrol the sentry’s infrared sensor will even detect and avoid obstacles. To run the sentry you’ll need a PC running Windows® XP or Vista (or Macintosh with a Wi-Fi card), a broadband internet connection, router, or other type of wireless access point.

Check price and availability at Hammacher Schlemmer.

“It operates for two hours from its rechargeable battery which draws power from the included recharging base (the sentry can locate its base using its built-in infrared sensor when you command it to re-charge remotely); full charge requires two hours.”