[Eric] sent in his (link dead, try the Internet Archive version) iPod transmitter radio modem hack.Given the short range of these FM modulators (and FCC rules) I’d call this an academic exercise. Combined with a few mods, it could be useful for bursting data from a micro-controller. (Think APRS)
Asus EeePC Bonus:About a week ago, [johnx] added a 16GB flash drive and a bluetooth adapter to his. Yesterday, [ta2cba] showed off how he squeezed a four port hub inside his – allowing a pair of devices to live in the extra min-ipcie bay and leave two ports to spare for later add-ons.