You may want to print the list of acceptable ID's and take it with you to the airport, as there are numerous reports here of standard ID's, labeled as acceptable and appearing on the TSA list, having not been recognized by TSA.
I personally had a TSO at SEA refuse to accept my US passport as acceptable ID. She insisted that I had to show "government issued ID" such as a drivers license; I requested a supervisor, who allowed me to pass through using my passport as ID, though she told me that I should bring my drivers license next time. Since then I have used my passport as ID without a problem, but you just never know.