At the American Museum of Natural History this cam is set up in the annual Butterfly Exhibit.
I think this cam is a 30 sec refresh and everyone can enjoy it! [url]http://www.amnh.org/exhibitions/butterflies/webcams/cam1.php [/url]
Here's a link to more information about the butterfly exhibit: http://www.amnh.org/exhibitions/butterflies/?src=e_f
This is a cross-post at Cerinthe's suggestion.