Tonight's Barack Obama's night, but John McCain will obviously do everything in his power to steal some of that thunder. He already has a special ad ready to air during the convention coverage. In the ad, which his communications director says is "the first of its kind," McCain speaks directly to Obama on camera. Innovative. Knowing what we know about McCain ads it will be wrong-yet-troubling-effective. Good thing we also know a little something about Obama's speeches. [HP]