Blerg! Tina Fey's genius workplace brainchild never got the viewers it deserved for its brilliant, observant humor and its vernacular-changing one-liners (we will never get to go to there again!), but maybe Liz Lemon's great-granddaughter's TV pitch to immortal NBC President Kenneth in the future will bring in eyeballs. Its super-meta jokes and biting wittiness were truly second to none. Like Tracy, we didn't know how to say goodbye, but like The Rural Juror, we will never forget you, 30 Rock.

After beating back death for two seasons, the third show in CBS' CSI franchise cracked its last case. (Ironically, the original CSI keeps going strong.) Always more grounded than its Miami sister, CSI: NY mixed its scientific crime-solving with interesting stories about New York itself. And even more than the other shows in the franchise, we believed this team was a close-knit family — and not just because Danny and Lindsay got married. Perhaps reading the writing on the wall, the show closed on a very conclusive note: Years after losing his wife in the 9/11 terrorist attacks, Mac proposed to his new love Christine. Who doesn't love a happy ending.

After nine seasons, the Dunder Mifflin paper company will close its doors for good on May 16. Adapted from the British series of the same name, The Office won over fans with its combination of humor and heart. The NBC series also solidified its place in television history by pioneering the now fairly common single-camera comedy format. But the show's real legacy lies in its characters — the timelessness of Jim and Pam's love story, the cringe-worthy antics of awkward bosses Michael Scott and Andy Bernard, and the endless quirks of Dwight Schrute among them. Who would have thought that bidding farewell to a group of exasperating co-workers would be so hard? (That's what she said.)

The writing was on the wall when ABC banished Happy Endings to Fridays, but that doesn't mean its cancellation hurts any less. Offbeat, maniacally absurd and oh-so GIF-able, the comedy was a cacophonous delight and made us wish we had friends like these (not to mention, a marriage like Brad and Jane's). Your move, USA.

Although this family-friendly comedy was heartwarming, it didn't fall into the trap of becoming too precious. Dreamer Ben had an inspiring energy and resourcefulness that belied his goofy exterior, while his more serious sibling Kate was charming in her almost child-like approach to re-entering the world of dating after single motherhood derailed her. It was also refreshing that daughter Maddie held her own and wasn't relegated to the usual moppet one-liners. Throw in the gleefully uninhibited gal pal BJ and devoted friend Tommy, and you had an uplifting take on a modern famly that we're going to miss on our TV landscape.

After five seasons, J.J. Abrams' sci-fi drama came to an emotionally heartbreaking end in January. Though the series stayed true to its name with its otherworldly elements, diehard fans always saw it for what it truly was: A family drama masquerading as a genre series. That was driven home in the series finale, when Walter made the ultimate sacrifice to save not only his family, but also the world. We'll always have tulips and the feeling that we were part of the Bishop family.

No one can say the producers of Body of Proof didn't give it their best shot. After two mediocre seasons as a wannabe-Castle procedural, the show got a big reboot for Season 3 including new cast members (the harmless everyman Mark Valley) and lots of over-the-top cases, like the plane crash, the city-wide blackout and that one time Megan’s daughter was kidnapped. Sadly, despite Dana Delany’s fresh take on the now-tired loner-curmudgeon character, the show never quite clicked. But, hey, it could always be worse. She could have been stuck playing crazy lovesick Katherine Mayfair for two more years on Desperate Housewives. Bullet dodged.

Sure, there were times when The New Normal was too schmaltzy, too preachy and just plain didn’t know what to do with Ellen Barkin’s character. But despite some minor flaws, the progressive NBC comedy showed us that co-creatot Ryan Murphy knows how to laugh at himself (Sing, anyone?) and also put Girls alum Andrew Rannells star potential on full. However, The New Normal will always be best remembered for introducing the world to Bebe Woods and her dazzling impressions (Grey Gardens’ Little Edie, Cher, etc.). Seriously, if this girl’s iPhone isn’t ringing off the hook come Monday, consider our faith in humanity lost.

Let's pour one out for Rules. The relationship comedy wasn't flashy or high-concept, but it did its job: bring in viewers. A perennial utility player during its seven-season run, the show never got its due, having been shepherded all over the schedule and usually not bowing until midseason to rescue CBS after one of its new comedies has bombed. And like any good backup, it always came through.

Poor Matthew Perry. He hasn't had much luck on the small screen since Friends ended. Studio 60, Mr. Sunshine and now Go On were all one-and-done series. But this one makes us saddest. Despite its sad-trombone grief support group premise, Go On slowly grew into a touching and very funny show because it understood one thing that is true about grief: It can make you do some weird, crazy things. At least Perry's character (and the viewers) got some closure as Ryan found the perfect place to scatter his late wife's ashes.

Despite its initial winning formula and a host of comedic talent (Christina Applegate, Will Arnett, Maya Rudolph and executive producer Lorne Michaels) in front of and behind the camera, the sitcom died a slow, painful death in its second season. After losing creator Emily Spivey, there was talk of rebooting it as a multi-camera comedy. Soon , Applegate left and, after a revolving door of showrunners, NBC finally put it out of its misery. Which is probably a good thing: We liked the show the way it was.

After five seasons, the Beverly Hills, 90210 reboot is signing off in May. While the series never gained the same pop culture relevance as its predecessor, the CW drama still managed to channel the over-the-top, soapy storylines (Annie is a prostitute! Liam's bodyguard is actually a stalker! Annie gets shot!) that made the original so much fun to watch.

Even though it's gone, Smash diehards and devout hate-watchers alike will always look back fondly on the show's up-and-down (and even further down) roller coaster history, whether it be Ivy’s drug-filled takeover of Times Square or Ellis' every move. We'll keep playing the Bombshell soundtrack thanks to timeless classics like "(They Just Keep) Moving the Line" and "Second Hand White Baby Grand," both courtesy of the show’s true star, Megan Hilty. Rest in tech, Smash.

After five seasons of meth-cooking, nursing home-bombing and breakfast-eating (!) fun, AMC's exploration of the decay of Walter White's soul will come to what's sure to be an explosive conclusion this August. Will Hank finally slap the cuffs on his brother-in-law or will Heisenberg somehow rise above it all? As badly as we want to find out, we're not quite ready to say goodbye.

After stumbling in the ratings during its second season, ABC pulled the comedy from its schedule in January. (The unaired episodes will be made available online.) Unfortunately, watching James Van Der Beek play a comically heightened version of himself was not enough to keep this one alive.

This sweet medical drama starring Mamie Gummar and boy-next-door hotties Justin Hartley and Michael Rady just never caught on. Unfortunately for those few viewers who did tune in, they'll never find out which guy Emily would've chosen.

When it first premiered in 2007, the drama about rich Upper East Side high school students and an anonymous blogger was all the rage. Six seasons (and a bunch of Chuck and Blair breakups) later we were pretty much ready to move on. But, hey, Dan Humphrey was the elusive Gossip Girl! XOXO!

Despite a standout lead performance from Andre Braugher, this drama, about a submarine crew that sets up a nuclear stronghold when the U.S. government fires on its own ship, just couldn't stay afloat (heh) on ABC's Thursday night. Fortunately, the show got to build to a proper ending before being buried at sea.

Awaiting a decision from TNT about a sixth season, the producers of this heist drama decided to shoot their ideal series finale as a gift to the fans before it was too late. Because of their foresight (TNT indeed canceled the show), viewers got to see Nate and Sophie's happy ending and learned the con would go on, as Parker took over as the leader of the Leverage team.

The Grey's Anatomy spin-off came to a close in January, ending Addison's complete journey. When she first came to Seattle Grace on the flagship series, everyone hated her. But over the years, we came to love her and root for her to find true happiness. She got it (husband baby and all!) as did most of the rest of the staff at Seaside Wellness.