Someday soon when you're flying economy class, you'll have a personal in-seat PC with 10.6-inch LCD monitor that will let you work without opening your laptop. A USB socket on your seat lets you plug in your USB drive to open up your documents and edit them using the StarOffice software package that's provided on the PC. You'll have to bring your own USB keyboard and mouse and plug them in, but otherwise you can buy them on the flight.
This is coming to you sooner than you think -- read this.
Unfortunately there's still no Internet access available in the sky. But you can entertain yourself with the hundreds of movies, television shows and music CDs all available online.