first flight with wi-fi access

so i’m headed to seattle for microsoft’s internal version of teched called techready and i’ve got high speed wi-fi access on the flight.  it’s usual for me to use the 4 hour flight to catch up on cached email or listen to the music and movies i’ve already downloaded, but to be able to send and receive email, music, movies, etc. on the flight?  now that is way cool!  american airlines was announced the expansion plans in crain’s chicago business earlier this year.