Similarly, most people below the age of 35 probably don’t realize “Monty Python’s Life of Brian” is at least partially a satire of 50s biblical epics like “Ben Hur”.
It’s an entirely different kind of movie.
Those were at least remembered by people who studied Gothic literature, but (according to Wikipedia) some of the other novels mentioned in Northanger Abbey – like Castle of Wolfenbach and Necromancer of the Black Forest – were so thoroughly forgotten that they were believed for some time to have been parody titles invented by Austen until their rediscovery by Austen scholars.
King Arthur and the Knights of the Round Table are referenced so often in pop culture that I’d be surprised if many people saw Holy Grail without having at least some passing familiarity with Arthurian legend. However, I could believe that more people alive today have seen Holy Grail than have read Le Morte d’Arthur or any of the earlier tales. And Holy Grail does in many ways specifically parody tropes from the medieval tales, not the general pop culture understanding of King Arthur.
Quite a lot was taken from Daredevil/Elektra, including the canister that blinded Murdock being the same one that mutated the turtles and “Splinter” being an obvious joke reference to “Stick”. But the whole thing was also a parody of four trends in comic books at the time: teenaged heroes (e.g. Teen Titans); mutants (e.g. X-Men); ninjas (including Elektra); and anthropomorphic characters (e.g. Usagi Yojimbo). Mashing them all up into one ridiculous unified entity was a stroke of genius. In turn, the TMNT spawned a number of parodies itself.
On another topic, the first time I watched Wreck-It Ralph and saw Alan Tudyk’s name in the end credits, I suddenly realized he’d been doing Ed Wynn the whole time. Wynn’s vocal stylings (probably most familiar from Mary Poppins, where he played the floating, giggling Uncle Albert) have lived on beyond their originator.
It can be. Robert Crumb did some “Classic Comix” during his WEIRDO period, undercutting the meanings of various works without much changing the text. His version of Boswell’s “Life of Samuel Johnson” was particularly brutal, though his Krafft-Ebing’s “Dementia Sexualis” was pretty good too.
Because it’s a better story than “the manager wanted us to do a cover so we said okay.” And yeah, it’s not exactly rocket science, but they had to come up with an arrangement for the song. It isn’t just that they claimed to have recorded it in a single take; they claimed it was the first time they played it.
I didn’t say they lied. I said they only recently started talking about it. There are lots of interviews with Lars where he admits that they let people believe it was their own song early on.
Hey, be nice. It’s an entirely different kind of movie.
Please direct us to any of their interviews. And again, what is “recently”. The original release of Garage Days Revisted shows that they credited the correct songwriters.
Also, this link is to a show in 1992 where they had diamond head on stage with them to perform Am I Evil? (this footage was released on their first Fan Can) I wouldn’t say 1992 is recent.
Hundreds of years from now cartoon characters will be wearing fruit covered hats, how many will know who Carmen Miranda was?
While I listen to Metallica, I’m hardly an expert on them, and I knew from the early 90s that that song was a cover, as well as “Helpless,” another Diamond Head cover from Garage Days Re-revisited. If it was a “secret,” it was an open one.
A relatively ancient example: the Scottish ballad “the Twa Corbies” is, apparently, a cynical parody of the English ballad “The Three Ravens”.
In the original, three ravens discuss eating the dead body of a knight, but remark that the body is too well guarded by the knight’s loyal hound, hawk and “lemman” (mistress) - the latter herself dies of grief, after burying him.
In the parody, two crows discuss eating the dead body of a knight, and note that the coast is clear - as his body has been deserted by his hound, hawk and lady:
“His lady’s taen another mate,
So we may mak our dinner sweet.”
They then discuss, in detail, how they will eat his body (and use his hair for nest-building).
I have known “The Twa Corbies” for years, and only learned that it was a parody of the more saccharine ballad fairly recently. 
Groucho Marx’s walk was supposedly a mockery of an 1890s fad among upper class East Coast young men. Nowadays it’s also an exercise, named for Groucho.
*The Man With The Golden Gun * is much more famous than The Man With The Golden Arm
The term I used was “relatively recently,” which is to be fair probably misleading. I should have said something more like “after they got big.” The last interview I remember it being mentioned in was the NWOBHM episode of Metal Evolution. I’ll try to find a YouTube link to that segment.
He’s not. He was a ripoff, who was developed into a humorous character in part to move him away from 'Stroke.
Whenever I hear “Taste of Honey” by Herb Alpert and the Tijuana Brass, my mind immediately goes to Allan Sherman’s “Waste of Money”.
“The Old Dope Peddler” by Tom Lehrer is a parody of “The Old Lamp-Lighter”, which has almost completely faded from view.
Our Gang’s Alfalfa singing “Just an Echo (woo hoo)” onstage to woo (who?) Darla–took me a half century before I heard the “straight” original version …
It’s just as well. Every time I hear that old song (usually a version by someone like Vaughn Monroe) I break down. 
You mean the version in which the frog accompanies Alfalfa? 