Call me weird, but I'm not mad at Tony Hayward, the CEO of BP. The CEO of a company doesn't make decisions on drilling rigs. The person who should be grilled is the one who was on the rig and made decisions that probably led to this disaster. The BP personnel on the rig argued with Transocean personnel about drilling decisions and rejected Halliburton's advice about placing centering devices before cementing the pipe in place.
But, the guy on the rig who made the calls most likely didn't have the final word. I'd bet he answers to someone in the Houston BP office who told him to save time and money and cut some corners. I have no proof of this, but it's a strong suspicion. This is who should be the target of our wrath, not some CEO sitting in his office in London. If Congress were interested in a real inquiry, this is whom they be grilling, not Tony Hayward.