Murray Perahia on Bach - a 28 minute chat at the piano.
Why I Hate the Goldberg Variations, by Jeremy Denk, whose new (lovely) recording of the Goldberg Variations is now streaming on NPR. Also by Denk: Hannibal Lecter's Guide to the Goldberg Variations, which explores the famous cannibal killer through the lens of Bach. This is Your Brain on the Goldberg Variations, which gets in-depth on just how the Variations vary.
Of the many available documentaries about the pianist Glenn Gould, "Genius within - The inner life of Glenn Gould" is one of the more thoughtful ones. [more inside]
Richter: The Enigma 1, 2. In Tours. At the Moscow Conservatory. At the Barbican 1, 2. Well-Tempered Clavier. Italian Concerto. Beethoven Sonatas. TL;DW: Richter plays Chopin
Glenn Gould on and off the record. The Russian Journey. Extasis. Thirty-Two Short Films About Glenn Gould. The Goldberg Variations (1955), (1981). The Well-Tempered Clavier. Beethoven Sonatas. The Idea of North. TL;DW: Gould plays Bach
Glenn Gould plays Clavier Ubung bestehend in einer ARIA mit verschiedenen Veraenderungen vors Clavicimbal mit 2 Manualen - also known as the Goldberg Variations. (previously)
Zenph Studios has developed a process (using high-resolution MIDI) which "re-performed" Glenn Gould's famous 1955 piano recordings of Bach's Goldberg Variations in hybrid multichannel SA-CD format.
An interactive Shockwave-based look at Bach's Well-tempered Clavier. Go one level up and explore the entire coverage of Bach.