This spring has seen the end to some of the 21st Century's biggest TV shows. Following the departure of Fox's "American Idol" on Monday, it has now been confirmed that the long-running CBS hit drama "C.S.I." has also been canceled. 

According to The Washington Post, "C.S.I." became a massive breakout hit when it debuted in 2000. The show went on to spawn three spinoffs, two of which have already been canceled. "C.S.I.: Cyber," starring Patricia Arquette, has been renewed for next season; Ted Danson's character will depart the flagship show and join this spinoff series.

CBS has announced that the network will not just leave the show as it is right now though. It plans to air a two-hour TV movie special series finale on Sunday, Sept. 27.

"We're a little misty-eyed about this one," Nina Tassler, CBS Entertainment chairman, said at a press conference Wednesday. "A series that's so important to this network and one of the longest-running series in the history of television will be retiring."

Entertainment Weekly reports the movie will feature a couple of "C.S.I." originals returning to conclude the series.

William Peterson and Marg Helgenberger are set to return and star in the movie. Tassler commented that show will be "epic," obviously with the return of the original stars that made it the powerhouse ratings bonanza that it once was, even when compared against "American Idol."

The Washington Post also reports that "The Big Bang Theory" will be temporarily moved over to Monday nights until the network can fulfill its Thursday night NFL coverage, after which the show will move back to Thursdays. The Monday night timeslot will then be filled with the much anticipated "Supergirl" series, which will go head-to-head with Fox's DC Comic show "Gotham."

You can also expect to get a double dose of "NCIS" on Tuesdays with the original followed by spinoff "NCIS: New Orleans." The movie adaptation of "Limitless" will follow those two and round out the night.