I was very surprised that the band decided to sport superhero costumes for their gig! Cool idea! The last time a superhero band ever happen, go back to 1981 on a Saturday AM NBC series called The Kid Super Power Hour. Maybe The Naked Brothers Band should perform for the Super Friends @ The Hall of Justice (LOL)!
Another thing I liked about this episode was Alex's courage to wear a blue tuxedo to the prom he attended. Sure, colored tuxes were hot back in the 70's & early 80's (sported a green one myself), I think they're pretty awesome.