I have been an Amex card holder for many moons and have always appreciated their membership rewards programs. While many CRTers have bemoaned the inability to obtain reward flights with miles, on Continental, at least, it is very easy to upgrade using miles.
I put virtually everything on my Amex card, including many reimbursed expenses, and accumulate a lot of miles. I started coming to CR in May of '06 and this summer I will be taking my 6th and 7th trips. Two of them have been business related, so other folks pay the airfare. For the other 5, I paid coach fares, usually $400-$600 dollars. First class on Continental is always $1500. So I pay an average $500 for coach and then upgrade to first using 30,000 points, which I think is a good value. Essentially, I am getting a thousand dollars in value for 30,000 points (although there are many ways to look at it, and some people might think I was being frivolous.)
My points total varies, but usually has some sort of equilibrium which allows me to have the 30,000 I need to upgrade. Not for my Labor Day trip, however. I was down a few thousand, even after "borrowing" points from Amex. I was set to buy them at $25 per thousand, when the Amex customer service operator told me that she was going to give me the extra 3000 points I needed, as I was a valuable customer

. I know that $75 dollars isn't too exciting, but when you combine that with a first class plane ticket to San Jose for Labor Day, it's priceless. Wait-that's the wrong credit card, but you get my point.
Would like to hear of any "solids" you have received from these faceless giants.
Ciaociao