American Idol (8pm, Fox) - The two finalists perform in part one of the season finale, and last season's winner Scotty McCreery also performs. The winner is revealed tomorrow night.
Glee (9pm, Fox) - It's graduation time (and season finale time) for McKinley High's class of 2012 and the glee kids look back on their time in high school and contemplate their futures. Gloria Estefan guest stars as Santana's mother.
Dancing with the Stars (9pm, ABC) - A winner is announced in the 14th season finale.
The L.A. Complex (9pm, CW) - Nick meets a kindred spirit after an improv class and Connor struggles with keeping up appearances on set.
Frontline: Cell Tower Deaths (10pm, UNC-TV) - Frontline examines the toll taht building and servicing America's cellular infrastructure is taking on cell-tower workers, who are 10 times more likely than average construction workers to die on the job.
Real Sports with Bryant Gumbel (10pm, HBO) - Segments include a look at why Korean women dominate the LPGA Tour and another visit with NYC fireman Matt Long, a marathoner and Ironman competitor who overcame a serious bike accident.

Glee (8pm, Fox) - The glee kids pay homage to Whitney Houston by performing her greatest hits.
closes in on Bridget, and Machado is forced off the case.
Titanic with Len Goodman (8pm, UNC-TV) - The legacy of the Titanic is explored by "Dancing with the Stars" judge Len Goodman (left), who once worked as an apprentice welder for the company that built the ship. Goodman visits Belfast, where the Titanic was built, and Southampton, England, home to many of the dead. He also meets with descendants of passengers and crew.
Cougar Town (8:30pm, ABC) - Grab a big ole glass of wine and settle in for the third season of "Cougar Town." In tonight's premiere, Grayson irks Jules by labeling her predictable. Also, Travis settles into his new off-campus housing, but he's not sure he wants his dad's dog as a roommate.
Frontline: The Interrupters (9pm, UNC-TV) - A two-hour profile of three Chicago activists with CeaseFire working to end gang violence. Directed by Steve James ("Hoop Dreams"). A great, great film, Adrienne says.
Can "Smash" save NBC? Well, it certainly can't hurt. And the Peacock needs this one. Bad.
Inside the Actors Studio (7pm, Bravo) - George Clooney talks to James Lipton about his life, his career, and his grand plans to prank the living daylights out of his pal Brad Pitt. Repeats at 2 a.m.
In the last decade, writer/director Ryan Murphy has made quite the impact on television.
And we have an earlier Murphy creation: "Nip/Tuck," Season Five, Part Two. There are eight episodes of the show that featured plastic surgeons Dylan Walsh and Julia McMahon as they cut a swath through Los Angeles.
The Biggest Loser (9pm, NBC) - The winner of the $250,000 prize is awarded in tonight's finale.
