American Experience: RFK, 9-11 p.m., Channels 48, 16.

Bobby Kennedy often had a pit-bull image. He fought mobsters, Lyndon Johnson and Jimmy Hoffa; he fought any battle his brother, John Kennedy, needed.

The real person was far different, this beautifully made documentary says. Family duty kept nudging the smallest and gentlest of the Kennedy boys into conflict.

Here's an extraordinarily warm film mostly through friends' eyes.

Plain Truth, 9-11 p.m., Lifetime.

An Amish teenager is accused of secretly giving birth and then killing her baby. She denies that she has ever had sex or been pregnant.

Now her big-city lawyer must live the Amish way while trying to find the truth.

This film has some extreme contrivances and melodramatic moments. Still, it brings enough humanity to keep us watching.

Mariska Hargitay (Law & Order: Special Victims Unit) is good as the lawyer. Alison Pill, the talented young Canadian, is excellent as her quiet client.

Worth watching

Smallville, 7 p.m., ABC Family. The youthful WB series is starting cable reruns each weeknight. That begins now with the well-made opener that goes back to the original meteor shower. Stick around at 8 p.m. for a documentary, Smallville Backstage Special.

Listen Up, 8:30 p.m., Channels 12, 7. Tony (Jason Alexander), the competitive type is bitter again. At his kids' school, his colleague (Malcolm-Jamal Warner) makes a better impression talking about his work.

Everybody Loves Raymond, 9 p.m., Channels 12, 7. This season's first two episodes were wonderful, with Ray's parents moving into a retirement complex one week, then being banished the next. Now things are back to normal; Ray frets that his plans will be foiled by a feud between his wife and his mother.

Two and a Half Men, 9:30 p.m., Channels 12, 7. Charlie figures it's helpful to sleep with his nephew's teacher.

And You Don't Stop: 30 Years of Hip-Hop opener, 10 p.m., VH1. These days, rap and hip-hop dominate the mainstream. Now the start of this excellent, five-night documentary reminds us of its roots. In parks, on street corners and at informal parties, brilliant young DJ's began experimenting with turntables. Tonight, many recall those days.

CSI: Miami, 10 p.m., Channels 12, 7. Jonathan Togo joins the show as a new crime-scene guy.

LAX, 10 p.m., Channels 5, 2. The airport decides not to inform passengers of a security warning. That leaves it with some bitter customers - including Roger's daughter, who misses a recital.