Quotes from works:
Spike: Hey, aren't you supposed to be dead?
Rainbow Dash: This isn't canon.
Spike: There ya go! It's not canon!
"We suggest you don't spend a lot of time trying to figure out where this episode comes in in the timeline of the series — it doesn't. It's a storytelling aberration, if you'll allow."
Quotes from creators:
Conan: You have no memory of making The Star Wars Holiday Special?
Harrison Ford: No memory.
Conan: So it doesn't exist.
Cain: I can't get past someone else raising Superman's son. I couldn't get past that; that made me crazy. Maybe because I'm a single dad... I dunno, maybe I'm wrong. Anybody wanna argue with me?
Host: We all hated it, too. (laughter)
Quotes from others:
David: Itís astounding to think that [Bryan] Singer actually thought this would lead off a series of further sequels; can you imagine the further adventures of Superman wishing he was Richard White? As bizarre as this was as a standalone movie, I canít fathom it as a status quo.
Chris: I honestly canít. Presumably future movies would all revolve around the Super-Deadbeat Dad from Krypton bonding with his son, and Richard quietly becoming subservient to the alien overlord who stole his girlfriend. Maybe Singer was actually trying to set it up so that weíd cheer for Luthor?
David: ...This movie made more bad decisions than a teenage alcoholic on prom night.
"Less than ten years after Crisis on Infinite Earths, the DC Universe still had a ton of continuity problems...There were also problems with stories that had been published after Crisis that DC wanted to quietly get rid of, like Batman: Year Two, a truly hilarious bit of insanity in which Batman teamed up with Joe Chill and tried to kill him using the same gun that killed his parents, which heíd kept in a drawer for thirty years."
"Now, the elephant in the room, the thing that overshadows the actual game: Sonia Belmont. Legends acted as an origin story for the entire Castlevania series, and is probably best known for being retconned by Koji Igarashi when he was producing the also-underwhelming Lament of Innocence for the PS2. This is also understandable, because during a dialogue Alucard basically says 'Yo, girl! Remember that time we totally boned?! How's that baby comin' along?' Which would make Trevor, Simon Victor, all the Belmonts related to Dracula. So this storyline was removed from the official timeline and, honestly, I am all the way okay with this."
"For medical purposes, Smedley needs to know identify the species of every Muppet Theater employee. There's just one problem: Nobody's sure what Gonzo is. Wait a minute! Didn't Muppets from Space establish that Gonzo is an alien? Well, it did, but come on — Who likes or cares about Muppets From Space?"
"For thirty years Kirk skirted death, only to fall victim to structural fatigue...If it makes you feel any better, William Shatner went on to co-write a series of Star Trek novels in which Kirk survived and goes on adventures with McCoy and Scotty, but the 'Shatnerverse' is not even close to canon even in the extended universe of Star Trek. And honestly, reading the Shaterverse will sort of make you wish they had stopped with the bridge."
"To spare the Ambassador and Picard further frustrations, Geordi leads them off to see the dolphins, an attempt by Rick Sternback to get his rather ill-advised idea of 'Cetacean Ops' into the show (which he added to the Star Trek: The Next Generation technical manual). This idea of navigation research that's being handled by a dozen dolphins being overseen by a couple of whales? Yeah, I know. This impractical and extremely stupid idea of filling huge areas of the ship with water solely to house fourteen sea mammals is never actually made explicitly clear in this show. This is really about as close as we can get... naw, this was just in Rick Sternback's head, where it should stay. You made a whole movie about searching for whales, alright? That should fill out your hippie quota until the end of the time."
"The crux of it, I think, is that thereís a fundamental mean-spiritedness to this book. This isnít just the book that wraps up Lawrence Milesís plotlines. It is, as he points out, a book whose sole purpose is nuking every trace of Milesís influence from the line so that it could go in a new direction...for all that the new series vaguely copies the outline of the Eighth Doctor Adventures in destroying Gallifrey and leaving the Doctor as the only one of his kind, the most notable thing about this book is how much itís rejected. Much like the half human revelation of the TV Movie, this book manages the rare feat of anti-canon — so radioactive and universally considered a bad idea that itís been actively rejected; people have gone out of their way to dig it up just to shoot it and make sure itís dead."
—Phil Sanfier on The Ancestor Cell
"As far as Hasbro is concerned, "There never was a Dinobot combiner." While the most likely explanation for this comment is that this particular Hasbro representative is unaware of an obscure UK only DVD pack-in comic it's also possible Hasbro has tried to erase "The Beast Within" from canon entirely using special canon cannons.