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 believe that the issue of renting DVDs and then copying them on to your Kaleidescape has been settled by the US supreme courts decision, that make VCRs legal. Fair use and all that good stuff.