Originally broadcast as an exclusive special on HBO, Barbra Streisand launched her September 6, 1986 concert One Voice, in part, as a protest against Reagan-era nuclear arms proliferation in the late Cold War; the event marked the diva's first official live performance since 1972.
| Actor | Role |
|---|---|
 Barbra StreisandSelf - Performer | Self - Performer |
 Barry GibbSelf - Guest Performer | Self - Guest Performer |
 Robin WilliamsSelf - Guest Performer | Self - Guest Performer |
 Henry WinklerSelf (Interviewee) | Self (Interviewee) |
 Sheena EastonSelf (Interviewee) | Self (Interviewee) |
 Whitney HoustonSelf (Interviewee) | Self (Interviewee) |
 Bette MidlerSelf (Interviewee) | Self (Interviewee) |
 Goldie HawnSelf - Audience Member (uncredited) | Self - Audience Member (uncredited) |
 Bruce WillisSelf - Audience Member (uncredited) | Self - Audience Member (uncredited) |
 Jane FondaSelf - Audience Member (uncredited) | Self - Audience Member (uncredited) |
 Sydney PollackSelf - Audience Member (uncredited) | Self - Audience Member (uncredited) |
 Chevy ChaseSelf - Audience Member (uncredited) | Self - Audience Member (uncredited) |
 Jack NicholsonSelf - Audience Member (uncredited) | Self - Audience Member (uncredited) |
 Sally FieldSelf - Audience Member (Uncredited) | Self - Audience Member (Uncredited) |