Two things; I suspect it's not wordpress since I don't see any call to a wp folder of content and theme.
How can I find something just like it in wordpress? Something where the columns won't be too small for youtube videos, something that'll have neat long and not too tall boxes just like this, and something that'll provide me with a way to search for my items and not wind up in dead ends in navigation, be it with a search bar or the neat little categories he set up on the right sidebar.
Believe you me, I've been trying all morning with a number of themes. Elegant themes was a disaster, they look good, but they probably all have pathetic customization options. I've tried with semiologic too, and it can't take in the entire width of a youtube video (without, I guess, having to hard code..)