Robert Loggia had a fun, four-episode run on The Sopranos this season.

Series producer, David Chase, must have thought the strong-willed, hard-headed, blathering "back-in-the-day" style of character Feech LaManna wasn't strong enough to last beyond that. But so what? Frankie Valli's here!

The falsetto is now on The Sopranos, after making his debut last night as a Florida-based mob captain aligned with "Little Carmine." Johnny Sack could be in for big trouble.

But the jury is still out on the main theme of last night's episode - the teen-age hijinks of A.J. Soprano, and his rebellion toward his mother over the breakup with Tony. It was dark at times, weird at others (like when A.J. is apparently happy to hear he's "learning disabled," since it would give him unlimited time to complete his S.A.T.s), and hilarious at others (i.e. his face Krazy Glued to a hotel room carpet.)

The A.J. thread to the show seemed almost a diversion from the apparent mob war that's just getting under way between the Johnny Sack faction of the New York mob family, and the Little Carmine faction.

Let's hope next week brings us more Frankie Valli, and less Robert Iler.

MORE: Jeffrey Goldberg provides his take on last night's episode, plus a look at one actor's walk-on during one of its funnier scenes.