The Tonight Show Starring Jimmy Fallon, 11:30 p.m., NBC
Jimmy Fallon takes his first field trip as Tonight Show host, bringing the late-night show (and houseband the Roots!) to Florida this week for what will surely be lots of respectful jokes about our state. Fallon and Co. are setting up at Universal Orlando for four shows through Thursday, with guests like Jennifer Lopez, Kevin Hart, Jimmy Buffett, Rosario Dawson and George Lopez. Keep an eye out for sneak peeks from Universal Studios' new Harry Potter area Diagon Alley, set to open sometime soon. Hopefully Jimmy has more details than we do.
SEASON FINALE Louie, 10 p.m., FX
As its fourth season comes to a close tonight, Louie remains wonderfully unpredictable. Memorable one-off episodes (like last week's trip back to Louie's childhood) punctuated what felt like a more cohesive run; more than any other season, these 12 episodes told a continuous story. Heck, there was a six-episode arc in the middle about the schlubby comedian falling in love with a woman who didn't speak English, Louie's longest sustained stretch of continuity ever. Two more episodes close out the season tonight, but we wouldn't dare speculate on what they'll be about. Half the fun is not knowing.
24: Live Another Day, 9 p.m., Fox
It's the 200th episode of the 24 franchise! Ticking time bombs for everyone!
SEASON FINALE Fargo, 10 p.m., FX
Between this and Parenthood and Hannibal, there's a case to be made that not all adaptations of beloved works of art have to be lousy. Fargo especially should be held up as a model for how to take an existing piece of work and turn it into something completely fresh and intriguing. Fargo the show used the movie's setting and tone to kickstart a dynamic and original 10-episode story with its own outstanding acting (give Billy Bob Thornton all of the awards right now for his performance as Lorne Malvo); complicated characters (Lester Nygaard's transformation from nebbish protagonist to self-satisfied villain was exquisitely executed); and nail-biting plot twists (that snowy shoot-out!). Savor all of this during tonight's finale, because the show's second season isn't expected to have the same cast. Note: This is a supersized episode that ends about 11:30 p.m. Program your DVRs accordingly.
SEASON PREMIERE Perception, 10 p.m., TNT
Season 3 of this mystery-crime drama returns with a trip to Paris and Eric McCormack as a criminal expert. But his real job is to remind us that it's been eight whole years since his show Will and Grace went off the air. That's the real crime.
Nature, 8 p.m., PBS
Having a rough day? Catch an episode of this wildlife show and gain a little perspective. This week, it's time for Southern Africa's biggest animal migration, when herds undertake an annual trek across a vast landscape in their never-ending quest for grass and water. That'll make the coffee stain on your shirt seem, uh, minor.
SEASON FINALE Diners, Drive-Ins and Dives, 10 p.m., Food
In the season finale, Guy revisits some of the series' most memorable meals from the grill. Among the delectables? Burgers in Tampa! Plus smoked deli meats in Toronto, octopus and jerk chicken in Hawaii and classic barbecue in Texas. Whatever, our burgers are better.
SEASON PREMIERE Rising Star, 9 p.m., ABC
By far the most interesting thing about this new singing competition is its host: Josh Groban. The internationally acclaimed singer with the gigantic voice and propensity for quick quips will preside over this show that uses a voting app in real time to determine which singers advance. Kesha, Ludacris and Brad Paisley are also along for the ride as musical "experts." The show airs live throughout most of the country — which means it's on at 8 p.m. CT and 7 MT — because of the real-time voting format. We can't decide what's more terrifying, that performers can see how the voting is going as they sing, or that Kesha is considered a musical expert.