The Barber of Seville/YMMV

The original opera:

 * Adaptation Displacement: as previously mentioned, Rossini's opera has triumphed over not only three competitors in the same genre, but the original play.
 * Ear Worm: Say it with me now: Figaro! Figaro, Figaro Figaro...
 * Also a Signature Line
 * Memetic Mutation: The rapid-fire "Figaro, figaro, figaro figarofigarofigaro" part of "Figaro's Aria" has been parodied in more works than could probably be counted.

The Woody Woodpecker cartoon:

 * Crowning Music of Awesome: When Woody sings "Largo al factotum" from Gioachino Rossini's Il barbiere di Siviglia.
 * Nightmare Fuel: Admit it -- when Woody s-l-o-w-l-y opened his razor ("colla donneeee-e-e-e-etta"), you gave a kind of shudder, didn't you?
 * Values Dissonance: The Native American customer, who, of course, wears a headdress and carries a tomahawk, in the 1940s -- and is made into a cigar-store Indian.