Phonetics: The Sounds of American English

Check out this educational page on the Sounds of American English from the University of Iowa (USA) - complete with cut-away animations of what is happening in the vocal tract and videos of the face during articulation.  My wife is probably tired of hearing me point out over the years that this is exactly what is missing from educational software for learning foreign languages.  Learning to properly articulate a sound element (phoneme) is so much easier if you know what the articulators (i.e. lips, tongue, jaw) are doing!  Well done.

(Hat tip: Good Morning Silicon Valley)