UPDATE: I've had this conversation a few times with people. Most everyone assumed BP lied about the flowrate during the blowout. I paid very close attention and, if you watched closely, it usually wasn't BP making the "5,000 Barrels per day" estimate of the flowrate. It was usually a USCG officer saying, but they were always standing right next to BP, especially Doug Suttles:
I've repeatedly told folks that, if you paid very close attention, BP didn't actually lie about the flowrate. They used a USCG officer as a shield to save themselves a few nickels. That's not lying; that's far worse. It's cowardice.