Read about Kusasi the Orangutan here and some video clips here on the Nature website.
Watch the program about the orphaned giant. BBC2 - Wednesday 19th October 2005. 8:00 - 8:50. See TV listing here. If you watch it you'll see Julia Roberts get grabbed by the 20st Kusasi.
Cool Orangutan slideshow here.
Animal games here and here and here (National Geographic).
Also, for photography check http://www.arkive.org/.