Russian Pronunciation, Video 2: Russian Vowels
"This is the second of a three-part series on Russian pronunciation. The goal is to quickly familiarize you with the sounds of Russian and the IPA symbols for those sounds. You'll then be able to learn them faster, either through your own studies or through my pronunciation trainers."
This Russian vowel pronunciation video has some diagrams and talks about tongue placement. It's a useful video for all the vowels, but most particularly звук ы.