Marijuana
Sonny Bono appears onscreen to tell kids that marijuana is a "bummer" that turns you into a "weedhead" and will make you "trip out" (the fact that, based upon his performance, Sonny appears to have ingested unknown substances before the cameras started rolling tends to limit the film's crediblity somewhat).
Release Date: 1968-12-31
Sonny Bono
Narrator