If you have a macbook in your lap and want to control your Boxee with said Macbook, this could be your ticket. A Boxee user created a simple little Boxee widget that does just that.
The widget leverages the Boxee remote web interface to control Boxee, It provides basic media control, volume and other basic remote controls.
It’s available for free at Boxee: Boxee Remote 1.0 (Dashboard Widget)
The HTPC program I use, SageTV has a web-based remote control as well – similar to BeyondTV and many other HTPC programs.