"Fonzie the Superstar"

This is definitely a better (B-) proto-crossover although still odd in ways I'll discuss in the notes.  The title is a fitting one since Fonzie, sort of as distinct from Winkler the actor, was a superstar in real life in 1976, as odd as that is to recall now.  Anyway, Ralph wants Fonzie to sing in Potsie's place while Potsie is out of town (for reasons), but Fonzie has stage fright.  

Lots o' notes:

• Potsie has a rich uncle who wants him to go to Notre Dame, so Potsie's parents (who it's well established hate him) want him to tour the campus that weekend.
• Fonzie will be out of town shortly before the "Senior Dance," which is being held at Arnold's because apparently they tore down the sock hop sets from the first couple seasons.
• Fonzie is going to the Powderpuff Derby, to help Pinky Tuscadero, which, like really?  That's historic!  (I want to say she doesn't show up until Season Four though, and this reference may be retconned.)  They had quite the celebration party, if you catch his drift.
• Richie again stands up to Fonzie, which I always like, but then lies for him, until Fonzie gets up his courage to recite "Heartbreak Hotel" to an adoring audience.
• Ralph spoils Psycho (1960), because he's psychic and kind of a dick, but Mr. Roberts came out in 1955, so I'll cut him slack on that.
• Arnold doesn't recognize the name Bob Dylan.  Robert Zimmerman was still a teenager and hadn't yet moved to New York.
• Fonzie's singing costume is a bit Vegas Elvis meets Evel Knievel, which works.
• Sally Hightower is an Audience Member in Pink but would eventually work her way up to characters with names.
• I'm going to assume that Patty Petralunga, played by Jillian Kesner (who would return as Lorraine), is the sister of Paula, and probably the girl with lines and a very '70s look to her, especially the tight jeans and long loose hair.
• John-Anthony Bailey/ Jack Baker is back as Sticks, with a few lines and a chance to actually play drums for an audience.  He also reacts to Ralph wanting to do an Al Jolson impression.
• Laverne & Shirley are also back and have more to do than in the previous episode.  I review their portion at https://revisitinglaverneandshirley.blogspot.com/2021/03/doo-wop-wop.html, but I have to note here that they do backup for Fonzie and as the "Arnoldettes."
• This time Arthur Silver's writing partner is Barry Rubinowitz, who would do six more scripts, as well as eight for L&S.
• This episode originally aired right before Fonzie guest-starred on "The Society Party," but I don't know if that's the "Friday night date" that Laverne is hoping for in this episode.  In any case, the girls kicked the Sweathogs over to Thursdays for the time being and settled into the Tuesday night neighborhood.  Nine p.m. sitcom viewers would've watched M*A*S*H in its fourth (first post-Trapper-and-Blake) season.  I'm not even sure I stayed up until 8:30 yet, at almost eight years old.