From now until January 2nd, buying an iPad at Best Buy gives you an opportunity to nab a free mifi hotspot. You will of course have to sign up for a 2-year contract, which is a bummer. Still, it's definitely useful if you know you will be out and about and will need an internet connection.
According to the report, you can get the mobile hotspot from either Verizon, Sprint or AT&T. Sprint is offering the Overdrive, which is supposed to be pretty damned fast.