From CHiPs Online:
After Ponch and Bobby leave the sick kid's house, they're riding down a road. If you have a TV which lets you see the very edges of the picture (or a video-in card on your computer) you can see part of the shadow of the camera truck at the bottom of the screen.
Bobby: (watching the shuttle launch) You think they'll ever need CHP's in space, Ponch?
Natalie Schafer (Mrs. Birdwing) is best known as playing Mrs. Howell on Gilligan's Island. Ron Palillo (Nick) is best known as playing Arnold Horshack on Welcome Back, Kotter. The following episode features Robert Hegyes, another star of Welcome Back, Kotter.