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On Friday, NBC announced its midseason schedule, which will be entirely devoid of sitcoms on Thursday nights. This will be the first time that has happened since the early 1980s. "Cheers," which premiered on Thursday nights in 1982, is still considered among the finest comedies of all time. It was a darling of the Emmys for many years, thanks to a cast led by Ted Danson (top left). NBC
"The Cosby Show" dominated the ratings through much of the mid- and late 1980s and remains a standard against which family comedies are measured. (In recent months, reruns have been pulled from TV Land after allegations about Bill Cosby and sexual assault.) NBC
Michael J. Fox, left, shot to stardom after portraying stalwart Republican (in a family of liberals) Alex P. Keaton on "Family Ties." Courtesy NBC
"Night Court," starring Markie Post and Harry Anderson, was a perfect show to follow "Cheers" on Thursday nights, another workplace comedy with quirky characters. From Warner Bros.
"Wings," with Tim Daly, center, and Steven Weber, left, was sort of the "also-ran" show during the "Cheers" heyday, but it was able to muster eight seasons. From NBC
"Cosby" spinoff "A Different World" continues to be beloved among viewers who were around the same age as Whitley (Jasmine Guy, right) and Dwayne Wayne (Kadeem Hardison) in college. From NBC
"Seinfeld" inspired a cult-like following usually reserved for science fiction TV series. Between the Junior Mints, the "yada-yada," Elaine's crazy dancing and Festivus, there were many memorable moments. The show also stands the test of time in reruns. NBC
"Friends" is seen as synonymous with the 1990s, inspiring fashion, humor and music (that catchy theme song even hit No. 1). Jennifer Aniston emerged as an A-list star after it ended in 2004, and the others haven't done badly, either. From Warner Bros.
"Cheers'" spinoff "Frasier" was like catnip to Emmy voters. As Frasier Crane, Kelsey Grammer, right, played off against a number of wacky characters, especially David Hyde Pierce, second from left, as brother Niles. NBC
"Mad About You," starring Paul Reiser and Helen Hunt, was often seen as the companion series to "Friends" and "Seinfeld," sharing the comedic sensibilities of both. Hunt went on to movie fame during and after its run. sony pictures/getty images
"Will and Grace," starring Debra Messing, left, and Megan Mullally, broke ground in portraying the relationship between a straight woman and a gay man, and may very well have set some sort of record for guest stars over the years. NBC
One of the first "single camera" comedies with no studio audience, "Scrubs" was another NBC series that developed a cult following despite so-so ratings. Matthew Simmons/Getty Images
"30 Rock" was willing to bite the hand that fed it: an NBC comedy set at NBC. The stars were, from left, Tracy Morgan, Alec Baldwin, Tina Fey, Jane Krakowski and Jack McBrayer. nbc
NBC was dying for comedy hits in the middle of the last decade, and along came "The Office," the remake of the acclaimed British series. It made Steve Carell, right, and Ed Helms into stars, and was the anchor for the network's revamped "Comedy Night Done Right." Trae Patton/NBCU Photo Bank
"My Name is Earl's" first season was a big hit for NBC, though ratings for the show, about the dim-witted hero's (Jason Lee) search to make up all his past wrongs, steadily declined over four seasons. From NBC
"Community" was anything but a ratings hit -- something it almost wore as a badge of honor -- but fans on social media weren't ready to give up on it after five seasons at NBC. Yahoo! is allowing it to have a sixth season, following in the footsteps of "Arrested Development." NBC
Not quite a spinoff of "The Office," Amy Poehler and the cast of "Parks and Recreation" slowly gained a fan following, especially in recent years. The Thursday mainstay will live out its final episodes on Tuesday nights in early 2015. NBC
