Bowzer once stunned a fourth season audience by announcing dramatically at the end of one episode, "This is the last Sha Na Na show you will ever see." He then launches into an explanation that "me and the boys (sic) have been giving it a lot of thought, and we've decided that it's time to move on". Moments later, this is revealed to be a setup for an elaborate joke, as Bowzer responds to a "message" from an off-stage producer: "What?! We HAVEN'T been canceled?!" He then pantomimes tremendous relief, and advises the audience to ignore everything he just said!
"Cookie", who joined the stable of characters in 1980, was "introduced" in the episode previous to her actual first appearance, as Coach (Soupy Sales) calls to her to answer a ringing phone.
Of the ten original members of the group, only two - Johnny Contardo and Jocko Marcellino - ever appeared on camera (in separate sketches) with ungreased hair.
Non-musical special guests included Frank Gorshin, Henny Youngman, Phyllis Diller, and Milton Berle; Broadway star Ethel Merman also made an appearance, during which she sang a duet with Bowzer: a (very) reworked version of "Anything You Can Do, I Can Do Better".
When the group performed at the original Woodstock Music Festival in 1969, Jocko Marcellino was the youngest performer to appear onstage.