NCIS (7 p.m., Ch. 2): Two Marines' wives are murdered.
It's the Easter Beagle, Charlie Brown (7 p.m., Ch. 4): 1974 animation. (Repeat)
American Idol (7 p.m., Ch. 13): The remaining contestants perform.
Gilmore Girls (7 p.m., Ch. 30): Rory visits her old boyfriend, Jess.
The Unit (8 p.m., Ch. 2): The team investigates the sale of nuclear materials to Iran.
The Ten Commandments (8 p.m., Ch. 4): If you slogged through the incredibly boring Part 1 of this completely unnecessary TV movie remake hoping things would improve in Part 2, you were mistaken. This is duller than dull.
Scrubs (8 p.m., Ch. 5): J.D.'s ne'er-do-well brother (Tom Cavanagh) visits. (A repeat at 7:30 p.m. is the one with the "Wizard of Oz" fantasy sequence.)
Frontline (9 p.m., Ch. 7): A look back at the 1989 protests at China's Tiananmen Square.
House (8 p.m., Ch. 13): A boy's symptoms remind House of a case he treated years earlier.
Veronica Mars (8 p.m., Ch. 24): Veronica's dreams are haunted by the kids killed in the school-bus crash.
Conviction (9 p.m., Ch. 5): A "bonus" episode as NBC tries to find a few viewers for this Friday-night series. Tonight, Nick is robbed and beaten.