Band reunions that take place more than a decade down the line are generally sad affairs that tend to accentuate the passage of time rather than causing it to stand still. But even though the original members of the Fluid — John Robinson, Garrett Shavlik, James Clower, Rick Kulwicki and Matt Bischoff — hadn't played together since the early '90s, they marked Sub Pop Records' twentieth anniversary by making a racket every bit as thrilling as the stuff they churned out in their heyday, to the delight of a crowd populated by many of Denver's biggest music lovers. What a wonderful exception to the rule.