After that brief discussion of Didi Conn the other day, I saw, on Mark Evanier's invaluable blog News From Me, this clip of the late Doug Henning performing the famous Metamorphosis trick, assisted by none other than Ms. Conn (nee Edith Bernstein, if you can dig that). Assisted probably isn't the right word, since it's clearly Didi who's doing the heavy lifting here.
In addition to her facility with magic, Didi also shows the ability to execute a highly rigorous series of calisthenics, and to wear Henning's trademark rainbow accoutrements without sacrificing every last shred of her dignity.
This is from Henning's Broadway opus, The Magic Show, circa 1981. Prepare to be amazed: