The ace card for every marketing campaign is the E3 trailer. After just a few hours, here are the most popular* videos coming out of the first day:
*Calculated by YouTube views at 0730 EST June 11. Where possible, the order of these videos were calculated by official publisher upload viewing figures. Taking into account all of the duplicates and re-uploads would likely change the results entirely, but just roll with it and enjoy them all.
I'm pretty sure when America wakes up, the numbers will all change anyway.