How I Met Your Mother (CBS, 8 p.m.) — Season finale. Rumor has it The Mother will be revealed, or in the words of the official promo, we should “get ready for the mother of all secrets.” Summer Roberts or GTFO. UPDATE: The Identity Of The Mother Was Revealed.
90210 (The CW, 8 p.m.) — Series finale. 90210 has been on for FIVE SEASONS. It’s the CW’s According to Jim.
2 Broke Girls (CBS, 9 p.m.) — “Caroline and Max make a discovery that could relaunch their cupcake business.” They realize nobody eats cupcakes anymore, so they open a store that only sells dog ponchos? Probably that.
Castle (ABC, 10 p.m.) — Season finale. An interview with a law enforcement agency makes Beckett reconsider her relationship with Castle. Swap “Beckett” for “Josh,” add “White” before “Castle,” change a pronoun, and yes.
Rectify (Sundance, 10 p.m.) — Tonight’s episode is called “Drip, Drip,” which is one “drip” away from having the same name as the other Chumbawamba song I know. Daniel does get knocked down and gets up again a lot…
LATE NIGHT GUESTS: Mark Harmon and Amy Schumer on Letterman; Miranda Lambert on Leno; John Cho on Ferguson; Bradley Cooper, Portia de Rossi, and Vampire Weekend on Fallon; J.J. Abrams on Stewart; and Jessica Buchanan and Erik Landemalm on Colbert.