The Sanyo PLC-WL2503 isn't the first whiteboard-less whiteboard solution we've seen -- in fact multi-surface projector interaction dates back at least as far as 2007. As for a projector with built-in interactive capabilities, well, Epson's BrightLink 450Wi has been on the job since last year, albeit at a much higher price: the Epson projector costs $2,200 while this Sanyo comes in at about $500 less. Both tout short-range projection: the BrightLink provides 80-inch displays from two feet, while the PLC-WL2503 requires at least 34 inches to do the same. They pack identical WXGA 1280x800 resolution and 2500 lumens of brightness, and they both use IR pens to communicate with front-facing cameras built into the projector for multi-surface interactivity. Really, the only thing separating these two on paper is price. If the BrightLink is just too rich for your blood, and you can wait a little while longer, the Sanyo PLC-WL2503 can have you writing on walls by the end of January.