Let the hive mind of Engadget get that for you.
"As someone who doesn't reside in the USA, I was wondering what would be the best way to get internet for my computer in the US for a couple of weeks? If it were Europe I know I'd look for some prepaid data. Is there anything similar offered by American carriers? A MiFi or a data SIM that I can tether from would work, but I'm trying to maintain a tight budget. Help!"
I love the concept of the "Hub" at home but I think it misses the mark completely by using the cell network. It would be better received in a format that uses the FIOS Internet connection that is being pushed out all over the country and not incur the additional charges of a cell phone! Maybe even have an option for network connection so you could choose the service???