This is a very very early version of Mel's Rockpile/SCTV Boogie/SCTV Disco with rockin' Mel Slirrup, because Harold Ramis is a part of the sketch, and he left the program after the first couple of seasons to work on Hollywood "big screen" projects, a/k/a motion pictures.
The Paul Zaza instrumental tune "Burbank Robber," which became the official opening theme song of Mel's Rockpile, is also missing here....
This version of Mel is actually even more simplistic and naive than the later version of Mel in subsequent seasons, who would often question or scratch his head when the students gave him bogus names or fictitious schools.
One of the funnier moments in later seasons on SCTV Disco came when John Candy and Dave Thomas danced as a couple on the show, doing a dance they told Mel was the "lust hustle." And who could forget Thomas' impersonation of actor Richard Harris singing his 1968 hit "MacArthur Park," in which he threatens to sue Mel after getting hit with a brick tossed from the audience?
Then there's the recurring visits from "Melba the Disco Queen" (Andrea Martin), and then Rick Moranis playing Mel's younger brother (Eugene Slirrup) as they try to operate a "sham" dancing contest with a predetermined winner (his brother). When the crowd objects loudly to Mel's announcement of the winner, he hastily hands the trophy to "Johnny Terio," who I am guessing was the brother of dancing icon (and Andy "Merv" Griffin's alleged object of affection) Denny.
1:16 The comical thing is that a comedic actress named Robin Duke ultimately joined the cast of SCTV (and later SNL), and it got me wondering if perhaps Catherine O'Hara knew Duke at the time (both probably cut their chops in the SCTV comedy troupes in either Chicago or Toronto) prior to joining the televised version of SCTV and tossed her name into the skit as an "inside joke."
Perhaps some show insider or "super fan" can confirm, but it seems highly unlikely for Catherine to just pull that name out of a hat for use in this skit. As many of you are aware, many of the original SNL cast members (dating back to '75) worked with many of the SCTV television performers in either the Chicago or Toronto "comedy troupes" that spit out some of the best comedic talent of the 1970s and 1980s.
If I recall correctly, many of the SCTV cast members were college students in the early 1970s who made names for themselves by appearing in various versions of the play "Godspell."
One of Robin Duke's memorable SCTV characters was Molly Earl, who hosted a "Crazy Crafts" show, and on SNL, she was remembered fondly for pairing alongside Joe Piscopo as one half of the miserable couple "Doug & Wendy Whiner."
And of course, RIP to Ms O'Hara, who recently left us after a stellar career.