Accents
21 Accents by Amy Walker -- an actress does 21 different English accents
21 Acentos en espanol por Carlos Santos -- A response to Amy Walker's version
Pingu does American -- Part One -- A British man does an American accent
Pingu tries again -- Part Two
Pat Fraley on accents & dialects -- A voice over instructor teaching voice over professionals how to develop an accent or dialect for their work.
Pat Fraley on mimicry -- How to find a voice to imitate and then how to imitate it.
Phoneme production
Phonetics: The sounds of American English -- this is a very helpful guide to the pronunciation of all the sounds (vowels and consonants) of American English. There are videos, sound clips, and animated diagrams of the mouth.
American English Vowel Chart -- Just the vowels. Sound files, arranged by back, front, and central vowels.
Mindfulness
Mindfulness trainer -- Free MP3 (audio) files you can listen to for mindfulness practice in breath, body, movement, and more.
Mindfulness wheel -- exercises for body, breath and speech. These are written.
Miscellaneous
On dishonesty, body language, intonation and using contractions!