http://www.youtube.com/watch?v=PlTgd5bummI
Just like when an unknown John Larroquette did the opening narration in The Texas Chainsaw Massacre, an unknown Craig T. Nelson got his start lending his voice to an infamous exploitation picture. You might be familiar with Flesh Gordon, the erotic 1970s softcore spoof of the Flash Gordon serials. At one point, the villainous Emperor Wang summons a horny stop-motion monster called The Great God Porno who spouts raunchy obscenities at every opportunity. The person spouting these obscenities is none other than an uncredited Craig T. Nelson.