9. Attempting to walk the airplane aisle before the beverage service is over.
8. The lack of a BlackBerry/PDA phone.
7. The ability to bump into every aisle seat passenger on the way to his seat.
6. Irritation over a weather delay (not the agent's fault!).
5. The belief that no carry-on is too big to fit in the overhead.
4. Luggage without wheels.
3. Paper tickets.
2. Boarding groups are a mystery.
1. How does this do-it-yourself “check-in thingy” work? - Michael Dixon, Edwardsville, Illinois