What to watch on Thursday, May 10...
Lots of goodbyes tonight, so keep those handkerchiefs handy!
In "Curriculum Unavailable," Abed pursues a hunch that Dean Pelton is actually an impostor, but his investigation to uncover the truth lands him in trouble with security. Charm your way out of that one, guy.
SEASON 3 FINALE, 8pm, CW
The Vampire Diaries
Well, here we are. The Season of the Originals draws to a close tonight with a boatload of juicy subplots: Stefan and Damon's mission to dispose of Klaus's body runs into issues; Caroline and Tyler make an important decision; Bonnie teams up with a secret someone to do something dramatic; Matt drives his truck off a bridge; and Elena daydreams about having parents. Stay cool over the summer, TVD!
SEASON 5 FINALE, 8pm, CBS
The Big Bang Theory
Fans of both weddings and the space program will be thrilled tonight when The Big Bang Theory's Season 5 finale is centered on Howard's pre-spaceflight marriage to Bernadette! NASA buffs should especially tune in for a special cameo by ACTUAL astronaut Mike Massimino! You'll know him when you see him, NASA buffs.
SEASON 1 FINALE, 9pm, CW
The Secret Circle
Tonight Cassie and Diana must bust out some dual dark magic in order to save Faye from Eben. Elsewhere Charles and Dawn get shadier than usual in trying to regain their powers. Plus it's the season finale, so expect some kind of Act 6 fireworks! #seriouslyCWrenewthisshow
SEASON 4 FINALE, 9:30pm, NBC
Parks and Recreation
The whole season's been leading up to this point: Tonight Election Day arrives in Pawnee and we'll learn whether Leslie Knope will beat out Bobby Newport (Paul Rudd) for the city councilperson seat. Tune in to find out whether Leslie's potentially premise-rattling victory comes to fruition!
SEASON 8 FINALE, 9pm, NBC
The Office's first post-Steve Carell season ends tonight with "Free Family Portrait Studio," in which Dwight offers to take family photos for the entire staff. Meanwhile Andy attempts a coup while dressed as a janitor and Robert California looks into a new career. Also maybe Kelly and Ryan will be killed off? Who knows!
PLUS NEW EPISODES OF...
American Idol, 8 p.m., Fox
Missing, 8 p.m., ABC
30 Rock, 8:30 p.m., NBC
Rules of Engagement, 8:30 p.m., CBS
Grey's Anatomy, 9 p.m., ABC
How It's Made, 9 p.m., Science
Mary Mary, 9 p.m., WE
Person of Interest, 9 p.m., CBS
The First 48, 9 p.m., A&E;
Touch, 9 p.m., Fox
Don't Be Tardy for the Wedding, 9:30 p.m., Bravo
7 Days of Sex, 10 p.m., Lifetime
Awake, 10 p.m., NBC
Kathy, 10 p.m., Bravo
Punk'd, 10 p.m., MTV
Scandal, 10 p.m., ABC
The Mentalist, 10 p.m., CBS
The Pauly D Project, 10:30 p.m., MTV
The Conversation With Amanda de Cadenet, 11 p.m., Lifetime
Eagleheart, 12 a.m., Cartoon Network
Adam Lambert on Chelsea Lately, 11 p.m., E!
Audra McDonald on The Wendy Williams Show, 12 a.m., BET
Carrie Underwood on Jimmy Kimmel Live, 12 a.m., ABC
Christiane Amanpour & Anna Kendrick on Late Late Show with Craig Ferguson, 12:37 a.m., CBS
Elizabeth Banks on Late Show with David Letterman, 11:35 p.m., CBS
Howie Mandel on Tonight Show with Jay Leno, 11:34 p.m., NBC
Katharine McPhee on Last Call with Carson Daly, 1:36 a.m., NBC
Tom Selleck & Zosia Mamet on Conan, 11 p.m., TBS
Will Ferrell & Ellie Kemper on Late Night with Jimmy Fallon, 12:37 a.m., NBC
What are you watching tonight?