Highlights

Highlights

Welcome to Racerville: This afternoon, the new animated series "Turbo Dogs" (Channel 4 at 12:30) features a town filled with race-car-obsessed pups.

The couple that moves in together at age 14 . . . stays together? It could happen, on tonight's "My Big Redneck Wedding" (CMT at 9) season premiere.

In his second hour-long special, "Louis C.K.: Chewed Up" (Showtime at 11), the comedian tackles taboo truths about life post-40.

"P.O.V." (Channel 26 at 11) follows a young woman reaching out to others with a genetic mutation that could turn into both breast and ovarian cancer.

Anne Hathaway has gamely fielded a million queries about her con-man ex-boyfriend; see if her "Saturday Night Live" (Channel 4 at 11:30) hosting stint includes the topic.

Unless Nicole Parker is secretly Tina Fey's long-lost twin, her Sarah Palin impression on "MADtv" (Channel 5 at 11:30) might not be up to par.

Sunday morning roundup: Channel 4 at 7 a.m. airs Friday's debate between Virginia's candidates for U.S. Senate, James Gilmore III (R) and Mark Warner (D); "Fox News Sunday" (Channel 5 at 9) interviews Sens. Joe Lieberman (I-Conn.) and Claire McCaskill (D-Mo.) and former White House senior adviser Karl Rove; "Our World With Black Enterprise" (Channel 50 at 9) discusses voter registration and turnout among African Americans; "This Week" (Channel 7 at 10) has Govs. Ed Rendell (D-Pa.) and Tim Pawlenty (R-Minn.) and Sens. Mel Martinez (R-Fla.) and Sherrod Brown (D-Ohio); "The Chris Matthews Show" (Channel 4 at 10) features Time magazine's Richard Stengel, NPR's Michele Norris, MSNBC's Joe Scarborough and syndicated columnist Kathleen Parker.

"Newsmakers" (C-SPAN at 10) talks with Federal Housing Finance Agency Director James Lockhart; "Face the Nation" (Channel 9 at 10:30) interviews Gov. Jennifer Granholm (D-Mich.), Sen. Dianne Feinstein (D-Calif.), Reps. Roy Blunt (R-Mo.) and Heather Wilson (R-N.M.), and the New York Times' David Brooks; "Meet the Press" (Channel 4 at 10:30) has Democratic strategist Paul Begala, Republican strategist Mike Murphy, PBS's Gwen Ifill, columnist Peggy Noonan and the Des Moines Register's David Yepsen; "Late Edition" (CNN at 11) talks to McCain economic adviser Nancy Pfotenhauer, Reps. Rahm Emanuel (D-Ill.) and Marsha Blackburn (R-Tenn.), and The Washington Post's Bart Gellman; "McLaughlin Group" (Channel 9 at 11:30) hosts MSNBC's Pat Buchanan, Newsweek's Eleanor Clift, syndicated radio commentator Monica Crowley and U.S. News & World Report's Mort Zuckerman.

CW debuts its Sunday night lineup, with "4Real" (at 5) taking celebs such as Cameron Diaz to meet young leaders around the world. "In Harm's Way" (at 6), the identical cousin of NBC's "America's Toughest Jobs," features hardworking Coast Guard divers and bull riders. Tom Shales previews "Valentine" (at 8) and "Easy Money" (at 9) beginning on Page C1.

"Masterpiece: The Last Enemy" (Channels 22, 26 at 9) begins a five-part thriller about a mathematician in the near future caught up in a new government program called Total Information Awareness, like an even creepier Big Brother.

Aw, Fred Willard is a good sport; the actor-comedian hosts the "First Annual Worldwide Fido Awards" (Nickelodeon at 8) showcasing a singing beagle and skateboarding bulldog.

Another couple follows the path of the beekeeping hippies and is eliminated from "The Amazing Race" (Channel 9 at 8).

Bill shows his emotional side on "True Blood" (HBO at 9) when his memories of living through the Civil War prove hard to handle.

"Murder in Black & White" (TV One at 10) airs the first of a four-part series about unsolved civil rights murders from the 1940s and '50s.

"The Girls Next Door" (E! at 10) kicks off its season with a trip to Vegas for Hef's 82nd birthday.

-- Emily Yahr