This afternoon, local broadcast stations will cover Pope Benedict XVI's scheduled arrival at Andrews Air Force Base, where President and Mrs. Bush are scheduled to greet him. WTTG (Channel 5) begins coverage at 3:30 p.m.; WRC (Channel 4) will incorporate the arrival into its 4 p.m. newscast; WJLA (Channel 7) and WUSA (Channel 9) will cut away from scheduled programming. WFDC (Channel 14) will provide coverage in Spanish.
On cable, Fox News Channel's Shepard Smith will oversee coverage this afternoon with streaming video available online for all pope-related events this week. CNN will break away from "Situation Room" for the arrival and provide streaming video on its Web site. MSNBC and Telemundo will also provide live coverage of the arrival.
Tonight, the seraphic seven perform on "American Idol" (Channel 5 at 8).
"The Biggest Loser" (Channel 4 at 8) welcomes back all contestants from the fifth season to check in before the announcement of the $250,000 winner in a two-hour finale.
"Dancing With the Stars" (Channel 7 at 9) sends away another couple.
"Law & Order: SVU" (Channel 4 at 10), back with its first episode since the end of the writers' strike, finds Mariska Hargitay's Detective Olivia Benson going undercover in prison to catch a rapist.
On "Boston Legal" (Channel 7 at 10), Shirley asks Alan to argue a case that would end the suffering of her father, who has Alzheimer's, and Jerry's new girlfriend sues him for sexual assault.
Alec Baldwin talks intimately with Gene Wilder for "Role Model: Gene Wilder" (TCM at 8), an interview show preceding screenings of two films Wilder made with writer-director Mel Brooks: "The Producers" at 9:15 and "Blazing Saddles" at 11.
"Deadliest Catch" (Discovery at 9), Discovery's most popular program, returns for a fourth season of extreme fishing stories.
"The Real Housewives of New York City" (Bravo at 10) wrap things up in a season finale, followed at 11 by the third-season premiere of "Work Out," a reality show about a Beverly Hills gym.
A new installment of "Real Sports With Bryant Gumbel" (HBO at 10) features Sen. Barack Obama discussing how basketball shaped his identity.
"Frontline" (Channels 22 and 26 at 9) finds out how five other capitalist democracies -- the United Kingdom, Japan, Germany, Taiwan and Switzerland -- deliver health care, in the hourlong documentary "Sick Around the World."
A night ahead of tomorrow's Clinton-Obama debate, Michelle Obama appears on "The Colbert Report" (Comedy Central at 11:30) in Philadelphia.
"The Tonight Show With Jay Leno" (Channel 4, 11:35) has Charles Barkley and three senior rock stars from the Young@Heart Chorus, which reinterprets rock and R&B songs.
-- Christian Hettinger