Mistakes in '90s Sitcoms That You Never Noticed Until Now

Who doesn’t love ’ sitcoms? From the zany antics on Friends to the campy hilarity on Will & Grace, these television shows sure delivered some good belly-laughs. But even though series like Seinfeld and The Simpsons will always have a fond place in our hearts, even the best can make mistakes.
Every great show runs into continuity errors, and these beloved ’90s comedies are no exception. Did it ever drive you crazy when Monica’s apartment number kept changing on Friends? How about when Jerry’s red scarf kept moving around? Are they just messing with us, or what?
Well, in case you missed these mistakes in ’90s sitcoms, we’ve got them all right here. Find out about the mishap in The Simpsons opening credits and about the giant blooper in Will & Grace‘s first season. And do you know what major faux pax Hilary Banks commits on Fresh of Bel-Air? Check out these mistakes in ’90s sitcoms you may have never noticed until now, and vote up the biggest bloopers and goofs.

The Impostor Pretending to be

One thing is for sure: you need to go watch season 9, episode 15 of Friends again. If you do, you may notice a decidedly non-Jennifer Aniston playing our beloved Rachel Green. One fan noticed the impostorwhile binge-watching the series on . In one scene of “The One with the Mugging,” Rachel and Joey rush in to Monica’s apartment. At this point, Rachel is still played by Aniston. But during Joey and Monica’s back and forth, you may catch a glimpse of a brunette standing exactly where Aniston once was! Magic? Evil doing? A stand in who accidentally made it into the shot? You be the judge.

Brace Switches to the Other Wrist on Fraiser

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Wait, When Did Monica Move?

The Embarrassing Visible Mic Pack on Fresh Prince of Bel-Air

Marge Goes Cordless on The Simpsons

Window Bars Return Inexplicably on Futurama

The Dishes on The Simpsons Have a Mind of Their Own

The Magically Appearing Necklace on Friends

The Case of the Materializing/Dematerializing Red Ribbon on Seinfeld

Ring Mishap on Will & Grace

In the pilot, Ellen and Rob are wearing wedding rings, but their wedding is not announced until season two.

Red Hat, Blue Hat, Which Is It? Make Up Your Mind, SpongeBob SquarePants!

The Seinfeld Crew Makes a Cameo

The Mystery Monkeys on The Simpsons

The Color Changing Cup on Friends

The Color Changing Frosting on

Continuity Problems with the Rake and Boxes in The Simpsons Opening Sequence

The Ghosts Play Cards on Fraiser

The Newspaper Switch on Seinfeld

Uh, How’d That Lipstick Get on Your Forehead, Cory?

Stewie’s Is Messing with Him on Family Guy

The Ghosts Play Chess on Will & Grace

The Magically Appearing Necklace on The Simpsons

Jerry’s Scarf Has a Mind of Its Own on Seinfeld

The Case of the Changing Newspaper on Family Guy

Martin Crane Can’t Decide What to Eat on Frasier