If you visit Bing today, you might see a really fluid and cool background theme. The background is a video of the changing seasons at Grand Teton National Park.
It is a very nice theme which I believe was done to note the first day of Fall.
Note, the video background does not have hotspots, so the only way to know about the theme is to hover over the "i" icon. Also, Bing has placed a pause button.
Here is a video of the theme:
Google and Yahoo do not have fall themes or logos today but we do.
Anyway, what do you think of the Bing background?
Forum discussion at Bing Forums.
