Everysitcom, even the greatest ones ever made, has flaws.

Take, for example,the 90s, which was anincredible decade for sitcomsthat included hits likeFriendsorFrasier.

While all the following sitcoms are indisputable classics, there are some flaws worth pointing out.

Frasier (left) and his dad, Martin, have a lively chat at the dining room table on Frasier

Image via Paramount

One small problem he works in radio.

Instead, a funny and likable character became a one-dimensional gag with diminishing returns.

The Banks family inThe Fresh Prince of Bel-Airare said to be living in a large mansion.

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Its a very nice-looking house, just maybe not a mansion in Bel-Air.

And how did Tim repay him?

Was the barrier of entry to the job the ability to knock on the front door?

Eric and Mr. Feeny talk in the backyard on Boy Meets World

Image via ABC

Keep Reading:10 Forgotten ’90s Sitcoms Worth Your Time

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Rachel and Monica stand together in a flashback to when they were younger on Friends.

Image via NBC

Friends TV Series Poster

Raymond and Debra in bed in the Everybody Loves Raymond series finale.

Image via CBS

Everybody Loves Raymond TV Poster

Uncle Phil looks sternly at Will in The Fresh Prince of Bel Air

Image via Warner Bros. Domestic Television Distribution

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Dana looks annoyed while Cody holds a guitar on Step by Step

Image via ABC

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Tim Taylor (Tim Allen) and Al Borland (Richard Karn) filming Tool Time on Home Improvement.

Image via ABC

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Fran looks down at Grace with a disgusted face in The Nanny.

Image via CBS

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Joey, buried in sand, admires his sand mermaid body in Friends.

Image via NBC

Stuart Minkus sitting at a desk in class in Boy Meets World.

Image via ABC