I don't think Shia went off the rails until Indiana Jones in '08. Something snapped once he started getting those big leading man roles.
I actually had a crush on a guy on my high school cross-country team who reminded me of Shia in terms of mannerisms, but like later Disney star David Henrie in terms of looks. He absolutely hated me which made me want him more. LOL
Anyway, nice cameo from Dylan O'Brien. He was absolutely adorable! Here he is 2 years later at 16:
YouTube really starts hitting in the middle of 2006, if I remember right. I think I started watching YouTube around January 2006, mainly for the 90's music videos that would get posted that you could no longer see on MTV. Then I got into the whole LonelyGirl15 thing, which was a spring/summer thing.
I had the experience of having friends who were born around that 1990-1993 range and it always kind of struck me how pretty much everyone I knew who was in that age range had a YouTube channel. There was such a massive shift in culture once YouTube became a thing and everyone started having video capable phones. (We're not quite there yet in CAP-Land, though, at least in terms of the video phone thing. That's more of an '07 thing.)
So yeah, 2006. Ooh, that means I can use Amy Winehouse soon. LOL