Originally Posted by ramraideruk
I can't believe it hasn't been mentioned already but join a frequent flyer program.
At checkin, ask if the flight is busy and, very politely, ask if they're needing to upgrade anyone. If they're not then ask if any of the bulkhead or emergency exit seats are available. This way, you'll get more leg roon.
Enjoy your flight!
Hahaha, sorry, beat you to it :-)
As for the upgrade, come on, in this day and age of thousands of *Gs... do you really think so?!