Phil Plait pointed to another great illustration of the immensity of the universe, this time coming from the Hayden Planetarium, which is part of the American Museum of Natural History, which starts at the Tibetan plateau and accelerates out to the cosmic microwave background before returning to Earth:
Now, while this is the best comprehensive video illustration of the scale of the universe that I have seen, it’s worth noting while everything is scaled accurately, the actual scales involved and their relationship to each other, are truly incomprehensible by a human mind. The fact that the “camera” starts moving faster than the speed of light shortly after showing the orbit of the moon should drive that point home.
Meng Bomin 