While performing at the Whiskey-a-Go-Go one evening, Jefferson Airplane frontman Marty Balin took too much acid and fell off the stage in the middle of the set. The problem? Balin had become completely mesmerized by an enormous pair of breasts in the audience.

[Balin's drop-offs were made up for by Grace Slick's drop-ins: She once jumped onstage during a CSNY show and performed silent karate moves until she was yanked by promoter Bill Graham. (Slick kept two medicine cabinets in her house, "one for recreational purposes, the other for medicinal routines." As Slick once explained, "I was always afraid of getting the mouthwash mixed up with the mescaline, or taking tablets of aspirin instead of acid.")]