The X Factor (Fox, 8 p.m.) — Season finale. (You drive me) crazy sometimes for being so outrageous, Britney Spears, but ultimately, I’m a slave 4 u, even if I’m against your toxic music of late and The X Factor always.
It’s Always Sunny In Philadelphia (FX, 10 p.m.) — Season finale. “Frank and Dennis present their cases to the rest of the gang at Paddy’s.” Only one episode this season has used the bar as its main setting (“Charlie’s Mom Gets Cancer”), so that synopsis is cause for excitement. Then sadness, knowing this is the last time we’ll see Charlie until next fall.
Jersey Shore (MTV, 10 p.m.) — Series finale. The end of a greasy, douchey, spraytanned era.
The League (FX, 10:30 p.m.) — Season finale. In case you hadn’t heard, The League was renewed for season five earlier today, making 2013 instantly better. The prospect of more Rafi Bombs will have that effect. BTW: JEFF GOLDBLUM IN THE RUXIN HOUSE TONIGHT.
Unsupervised (FX, 11:30 p.m.) — Series finale. Last Thursday’s episode that aired after The League and no one paid attention to was about kids bringing guns and knives into school, which, yeesh. Tonight’s is the last of a few leftovers FX had lying around from season one, which is a shame; Unsupervised grew on me, even if it was never nearly as good as, say, Archer. The world could always use more Kristen Bell.
LATE NIGHT GUESTS: Katie Holmes and Bon Jovi on Letterman; Katherine Heigl on Leno; Quentin Tarantino on Ferguson; Billy Crystal and Cee Lo on Fallon; and Paul Rudd, Rita Wilson, and Ben Gibbard on Conan.