Last night I boarded my flight and sat down in my aisle seat in the first few rows of coach.
The couple who were booked into the seats next to me showed up, and I immediately knew there was going to be a problem. They were very large. I got up to let them in, and the woman put up the arm rest between us, then spilled over into my seat by four-five inches. I asked her to put it down, and she declined, stating that she couldn't fit with it down. I immediately went to find a flight attendent. I was told "sorry, it's a full flight and there's nothing I can do." So I asked for a complaint respolution officer.
I had to walk up the jetway to talk to that person. He told me the flight was sold out and there was nothing he could do.
I suggested there were several seats in first class, and he could move them or me. He told me that wasn't an option, unless I wanted to pay the difference. I told him that wasn't an option, and that the situation was unacceptable, and that I wanted a supervisor. He told me that it could take a supervisor up to half an hour to arrive, and they were closing the plane's door in ten minutes.
I told him that he needed to figure something out other than punishing me for being able to fit into a seat. He then had the nerve to tell me he would take me off the plane because he felt that I would be rude to the people seated next to me.

I hadn't said anything to her other than asking her to not raise the armrest. I never raised my voice, refered to them as "people of size" rather than many other hurtful names, never cursed. I was very calm, and the only thing I said was that it was unacceptable and the situation needed to be resolved--that I had paid for a full seat and expected the use of a full seat.
Ultimately a connecting flight didn't show up, and there were seats left open, so I was able to move across the aisle to an unoccupied seat.
I think Continental's handling of the situation was unprofessional, bad show, and VERY poor customer service.
If you fly CO, beware that they will allow other people to take over your seat, and not do anything about it.
I will be calling Houston today--the situation was unacceptable, and I want an apology and for clarification of their policy. If it actually is that they don't force large passengers to buy a second seat and allow them to hang into other passengers seat, I'll never fly them again. With the obesity rates in this country, it's pretty good chances that you'll end up sharing your seat in the future.
Anne