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!"
Tried it out last night. Hulu works again now with the new app. And it appears to be better than the old app too. The old one would never 'pause' correctly with Hulu videos. The App Box is nice. Windows version already has the App Box, so now I'm just waiting for the Hulu fix on windows. But my primary HTPC is Linux, so I've been waiting for this one. I still use XBMC more than Boxee, but they both have their advantages.