Another new kit built on the Arduino - especially for remote data logging. I like it:

Introducing a new wireless kit, called the WiNet Kit. This kit makes it super simple to setup remote user input and wireless sensor logging.
The WiNet allows you to wirelessly communicate between a Arduino attached to your PC's USB port and an Arduino TouchShield device.

The pair of XBee Shields are directly pre-paired with each other so serial communications are super simple.

This is the base module that talks directly to the pc, it's an Arduino and a Xbee Shield.

[From WiNet]