Just in case any of you were wondering what to do on a long flight, here is a decent post from Yahoo!: Yahoo! linkage It also explains a little bit about jet lag, dehydration on the plane, and other things you may find useful. Cheers!
If it’s a business flight, you can get a lot of work done. Helps the time fly too. Otherwise, loosen you belt & shoes, let down your hair, listen to music, day dream, read a novel … I’ve been on the really long flights: from Calcutta to Copenhagen to New York/Chicago, and back.