The Summer of Love comes alive again (this time, for real!)...or at least it reappears as a "spectator sport," as the New York Times calls it. The Whitney Museum's be-in retrospective, Summer of Love: Art of the Psychedelic Era, includes everything from trippy album covers and posters to multimedia installations to otherworldly prints like Bill Ham's "Liquid Light Show" (above left). Plus icons like Avedon, Warhol, Ginsberg, and Jimi Hendrix's only known watercolor. Critics have called the show selective, revisionist, a celebration of the era's excess and narcissism — cool! We expect the boomers and their kids to show up in droves, maybe with flowers in their hair. Through September 16; visit the Whitney's site.