It felt kind of different. Some things I would call CGI, others I'm not so sure what to call it. And I'm not really sure CGI is the term. For example, Araragi's bed. It looks extremely detailed for something animated.
Other than that, I enjoyed it all. The scene where Araragi is running down the train tracks and it has a black/white picture, and also Oshino's entrance: both were extremely well done and absolutely my favorite part of it all.
And for what people want to read: Hanekawa's panties are white. It was shown for at least 30 seconds. Her tits did indeed bounce, and there were claps.