Caught this with the wife yesterday. Incredibly fun movie, and worth watching on IMAX. Vin Diesel seemed to be channelling his inner Stallone for a good part of it (slurring words, massive fistfights) and it offered closure to a number of characters from 2 Fast 2 Furious and Tokyo Drift, but still left the door wide open for a sequel.
Hey, I was there too! My friend and I got a pic with Ernie Hudson, another friend and I paid the $10 to sit in the DeLorean (the $$ went to Michael J. Fox's Parkinsons research charity, which I thought was great).