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.