it would be a cheap alternative with a decent board for a multimedia server/download manager/firewall pc. it would be a killer for a htpc, if there would be a board with a nice pci express slot (a 2400 pro is a decent hardware for the task, and cheap ofc). because it has practically no heat disciplination, it could be the dream cpu of a silent pc.
but the power consumption is high. indeed, its higher, than an undervoltaged q6600@1800 in idle mode with EIST enabled (tipically, you can get one with G0 stepping prime stable on 1.0-1.1V). with a 8600gt, P35 chipset. and 80W under load, which is indeed higher, but thats a quadcore with a GPU. and in dec, a new core comes with very low power consumptions at idle...
for laptops, its a fine choice, but for a desktop pc, without a good mobo, its pretty much useless.