Pic: Lynda George in Playboy, or else some 1960s Playmate (the Collinson twins, Shay Knuth, etc)
Video: Probably Diana Rigg in The Hospital (saw it in the theater with my family), if that scene counts, I don't think you see anything.
Same caveat with Elke Sommer in The Wicked Dreams of Paula Schultz, esp. as shown on TV.
Carole Cleveland topless in a Monty Python sketch was probably my first view of video gazongas.
Bush? Probably Valerie Perrine in Steambath on PBS (a nice ass shot at least, although she was a bit meaty for my tastes now).