Jon Robb considers wifi enabled hardrives:
“1. Digital still cameras.
2. Digital video cameras.
3. Portable radios.
4. Portable CD players.
5. TiVo (if shipped in combo with a base station that contains a hard drive).
6. Digital audio recorders.
7. Car DVD and tape players (with FM transmission add-ons for the Archos or iPod).
In all of those cases, the core element is the portable hard drive. The recording and/or playback feature functionality is merely a dumb peripheral (directly connected or connected via wireless). Add wireless and server capabilities and it can power your PC, your TV, and your stereo. “