John Cho?
At about the 1:33 mark I am certain that I recognize John Cho as one of the students listening to Harry's final broadcast. He doesn't have any lines and just stares mouth agape at the camera, but I'd SWEAR it's him, even though he's uncredited. I thought he'd be too young for it to be him, but I checked, and he would've been 17-18 when they filmed it, so it's at least a possibility.
Anybody else think the same thing?