Ook! - A programming language for orang-utans
A programming language for orang-utans that has only 3 syntax element and mimics the orang-utan spoken language:
Ook!.
See also, Ook# for the .NET platform.
Link via Boing Boing which includes a sample 'Hello World' program
written in Ook.
Imported from a really old blog. Some links might be dead. Let me know if you find dead links.