How many reviews of archival Grateful Dead releases begin with some variation of this sentence: If you only own one Grateful Dead concert, make sure it's this one?

OK, so let's get it out of the way early: If you only own one Grateful Dead concert, it wouldn't be a bad idea for it to be Aug. 27, 1972, a benefit show released as the box set "Sunshine Daydream."

Amid the roughly 100 archival Grateful Dead releases so far, what makes "Sunshine Daydream" stand out?

First, it's not just the concert, which plays out over three discs and features the Dead in their prime. There's also the movie, filmed on a shoestring budget to capture the hastily organized benefit show to help support the Springfield Creamery, owned by Ken Kesey's brother, in Eugene, Ore. Long available in previous edits as a grainy bootleg, the film is beautifully restored here on DVD.

The deluxe edition, available only through the Grateful Dead's website, comes with a well put-together 30-minute documentary featuring interviews with many of those who were a part of putting the show together, including Merry Prankster and concert emcee Ken Babbs and counter culture icon Wavy Gravy.