Holy mackerel that was about as dramatic of an intro as I've seen for archvis! And I've seen dramatic. I had to watch it a couple of times to enjoy all of the little animated bits going on! Especially liked the flat screen getting slapped on the wall. LOL! Of course, whether it's too over the top is obviously debatable. I see there are a few here that have even been annoyed by it. If you are looking for specific constructive crits, here are my 2 cents:
With all of the animation work that went into the home screen, board room and VIP lounge, the "contact us" module and "launch gallery" areas are a bit of a disappointment. At the least, their look and feel should be consistent with the rest of the modules, as it is, it looks as if it was kind of an afterthought. I had to dig a little to find the "launch gallery" button. I'd suggest making it softly glow and pulse the glow ever so slightly if that's the point of the VIP lounge. The theater screen with the animated text is nice, but not sure of the purpose, I'd recommend playing a reel there, or displaying the demo work there instead of another window as Kyle was kind enough to point out. Boardroom is nice, but the laptop should open of it's own accord and not make the viewer hunt. Unless you are trying to make the website a game, the viewer should not have to guess and blindly click around too much. Lastly, if you are going to leave the dramatic intro animation to each scene, I would at the very least, have some way to skip it or automatically skip it if the viewer has already seen it once. This reminds me of the early days of flash when everyone in college put a 2 minute intro animation in front of their websites and there was no way to skip past it. Once is plenty, and even then, a "skip intro" button should be handy.
As Maxer mentioned, you have a pretty unique site and with a little bit of polishing, it could also be highly usable besides being highly entertaining!