As predicted here, the chaff may be rising to the top of the “American Idol” heap (8 p.m., Fox). Last week, voters evicted Jessica Sierra, who had just been praised for having one of the strongest female voices of the group.

Joining her in the bottom three were Anwar Robinson and Nadia Turner, the two most capable performers of the lot. And absent from the firing squad was Anthony Fedorov. When asked what parts of young Anthony’s performance he didn’t enjoy, the caustic Simon Cowell suggested, “the beginning, middle and end.” And I couldn’t have agreed more. But, as I predicted, Fedorov’s non-threatening image will far outweigh his musical mediocrity and carry him into the final five.

I still think Nadia is my favorite “Idol” contestant.

• Speaking of show-biz crime, Comedy Central presents “Con” (9:30 p.m.). Self-professed confidence man Skyler Stone takes the “Candid Camera” and “Punk’d” genre to new levels. Part stand-up and part seminar, Skyler “teaches” his audience how to pull off elaborate cons on the most unlikely marks.

In the opening filmed segment, he bamboozles a Beverly Hills salon into donating a free makeover in exchange for exposure on the pilot of a new network show. What they don’t know is that he’s planned for them to makeover a disheveled homeless man named Mikey (played by Stone). Fear and hesitation give way to charity, and eventually the spa’s personnel are reduced to tears by Mikey’s transformation.

Tonight’s other highlights

• Claire goes into labor on “Lost” (7 p.m., ABC).
• “Great Performances” (8 p.m., PBS) presents a musical adaptation of the fable “The Little Prince” by Antoine de Saint-Exupery.
• The truth about Vaughn’s father proves elusive on “Alias” (8 p.m., ABC).
• A deadly rivalry between circus clowns on “CSI: NY” (9 p.m., CBS).
• McCoy makes a case out of gay marriage on “Law & Order” (9 p.m., NBC).
• Suspicion falls on Harlan’s old pal on “Eyes” (9 p.m., ABC).