This clip from Cameron Crowe's forthcoming Pearl Jam Twenty documentary is less than a minute long, but it is a fascinating glimpse into the very early history of the band. How early? Well, let's put it this way: This footage was shot just when they decided to change their name from Mookie Blaylock, after the New Jersey Nets basketball star, to Pearl Jam. Also, keep your eyes open for a quick appearance of a young, healthy Layne Staley!

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