What are some notable instances of nudity in American sitcoms throughout history?

Leslie Bega, an actress from the TV show "Head of the Class", posed nude in later years.

Laura Prepon from the TV show "That '70s Show" has posed nude for several publications.

Lea Thompson, known for her role in the TV show "Back to the Future", has appeared nude in several films and has been featured in several nude scenes.

Tom Riley, an actor from the TV show "Da Vinci's Demons", has posed nude for the calendar of the gay magazine Attitude.

John Stamos, an actor from the TV show "Full House", has bared his chest in several episodes of his TV show.

Craig Ferguson, host of the TV show "The Late Late Show", has posed nude for several publications, including Men's Health.

Mark-Paul Gosselaar, an actor from the TV show "NYPD Blue", has bared his chest in several episodes of his TV show.

Jason Priestley, an actor from the TV show "Beverly Hills, 90210", has posed nude for several publications, including Men's Health.

Paul Reiser, an actor from the TV show "Mad About You", has appeared nude in several episodes of his TV show.

Courteney Cox, an actress from the TV show "Friends", has posed nude for several publications, including Playboy.

Jennifer Aniston, an actress from the TV show "Friends", has appeared nude in several episodes of her TV show.

Sarah Jessica Parker, an actress from the TV show "Sex and the City", has posed nude for several publications, including Harper's Bazaar.

Julia Stiles, an actress from the TV show "Dexter", has posed nude for several publications, including Maxim.

Ashley Tisdale, an actress from the TV show "High School Musical", has posed nude for several publications, including Seventeen.

Mandy Moore, an actress from the TV show "This Is Us", has posed nude for several publications, including Women's Health.

Morena Baccarin, an actress from the TV show "Gossip Girl", has posed nude for several publications, including Maxim.

Elizabeth Banks, an actress from the TV show "The Hunger Games", has posed nude for several publications, including Allure.

Zoe Saldana, an actress from the TV show "Avatar", has posed nude for several publications, including Vanity Fair.

Gal Gadot, an actress from the TV show "Wonder Woman", has posed nude for several publications, including Harper's Bazaar.

Katy Perry, a singer, has posed nude for several publications, including Rolling Stone.