The "documentary" was uploaded to YouTube by an ex-googler. The video description says:
Shortly after I joined Google in 1999, my 5th-grade son asked if he could shoot a video at my office. His homework assignment was to introduce his younger brother to something new. This was the result. There was no one in the building but the 3 of us, and my son's camera technique was a bit raw, so it's likely of limited interest to anyone but our immediate friends and family, but you're welcome to take a look if you're curious.