Anyone use Line2? Using it you can make and receive calls and SMSs over WiFi on the iPhone, iPod Touch, and iPad (http://www.line2.com/ipod_ipad.aspx) Supposedly they're working on an Android version, too.

Not to metion that the friggin American Association of Petroleum Geologists gave them their 2005 Journalism Award for "serious efforts... to take current scientific knowledge and put it into an entertaining and stimulating format." Ack! Gag!