What to Watch Tonight: Wonderland Ends, Parks Prom, G.I. Community, Elementary Bites and More

Parks and Recreation - Season 6On TV this Thursday: Once Upon a Time in Wonderland hopefully lives happily ever after, Brad Paisley sings a jingle for The Crazy Ones, Parks and Rec goes to prom and Community meets G.I. Joe. As a supplement to TVLine’s original features (linked within) here are 10 programs to keep on your radar.

VIDEO | Community Sneak Peek: In Animated G.I. Joe Riff, ‘Buzzkill’ Britta Teaches Kids a Lesson

8 pm Once Upon A Time in Wonderland (ABC) | Series finale: As Alice and the White Rabbit raise an army to fight Jafar for the realm, a final confrontation takes place at the Well of Wonders. (By the way, did you hear about the Knave’s move to Storybrooke?)

8 pm The Big Bang Theory (CBS) | Raj struggles to date two women at once, while Sheldon struggles with an even greater problem: which gaming system to buy. (Oh, the horror!)

8:30 pm Parks and Recreation (NBC) | It’s prom night and no prom is complete without the perfect dress Leslie Knope! She and the parks department step in to save the high school’s prom and give them the perfect DJ — Tom! (OK, maybe not perfect….)

8:30 pm The Millers (CBS) | When Nate worries that his mother has made him feel superior to other people, he befriends hopeless co-worker Doug (played by guest star Andy Richter). Roseanne Barr guest-stars as Doug’s mother.

RELATED | Renewal Scorecard: What’s Coming Back? What’s Cancelled? On the Bubble?

9 pm Grey’s Anatomy (ABC) | As the hospital gets overwhelmed with flu-infected patients, the doctors fall ill one by one. Patrick Fabian (Big Love) guest-stars.

9 pm The Red Road (Sundance) | Season finale: Kopus finds himself up against the wall and in danger; Harold discovers heartbreaking news about his family’s past.

9:30 pm The Crazy Ones (CBS) | When Zach overpromises on a pitch, he must get Brad Paisley (guest-starring as himself) to sing a jingle penned by Danny Chase (returning guest star Josh Groban). And Danny is no Paisley fan.

PREVIEW | Scandal‘s Darby Stanchfield Talks Abby Vs. a ‘Misbehaved’ White House, Castle Fan Anxiety
VIDEO | Scandal Sneak Peek: Will Olivia Bargain With the Devil to Save Fitz?

VIDEO | Parenthood Sneak Peak: Can Adam and Crosby Handle a Boy Band Invasion?

10 pm Elementary (CBS) | Holmes and Watson must track a serial killer who was presumed dead but appears to be killing… and biting… again.

10 pm Vikings (History) | King Horik returns to Kattegat with a surprising proposition for Ragnar; Lagertha gets a less-than-enthusiastic homecoming from her new husband.

10 pm Sirens (USA Network) | Johnny introduces Theresa to his father and is surprised by a big secret his dad drops on him.

Hit the comments with your must-see picks from tonight’s lineup!