As good as the Consumers Union is, one type of gadget it doesn't field-test is vibrators. Enter Dr. Carol Queen, a well-respected sex worker and researcher, who not only gives her personal history with vibrators of all shapes and sizes - the one that her dad, a barber, used is particularly daunting - she demonstrates each one as well. So whether it's the familiar bullet, the G-spot stimulator, the butterfly, the rabbit, the mushroom-headed "Cadillac of vibrators," and even the vibrating cock ring, the highly-orgasmic Dr. Queen give each one a decent workout, as should be obvious from her erect nipples. She also displays a vibe or two meant strictly for guys.

But that's not all. Along with the demonstrations, Queen is a fount of good advice - like the fact that if a vibrator gets stuck up your ass in the "on" position, that's a medical emergency - and does it all with good humor, making this an exceptionally watchable, informative and nom-worthy tape.

Great Vibrations is available from Blank Tape Productions, P.O. Box 8263, Emeryville, CA 94662.