I only saw the second part late one night on Channel 4.
Very much looking forward to this release. I love these 'of the time' documentaries so much more than the BBCFour talking head type retrospective pieces.
"Hold on to your pool chairs: All three of Penelope Spheeris' entertaining, heartbreaking and iconic Decline of Western Civilization documentaries are officially coming to Blu-ray and DVD for the first time in a deluxe box set on June 30th. Shout! Factory will release the four-disc anthology chronicling L.A.'s hardcore punk, hair-metal and gutter-punk phenomena with a 40-page book, extended interviews and a new commentary track by Dave Grohl. Each film has also been given a 2K high-definition restoration, which Spheeris supervised."
You don't have to like the music to enjoy a good music doc.
Here is a youtube clip