Areasonable person could assume the  market for shows

with the word "swamp" in the title might be satur-

ated. But who ever said television programming was reasonable?

"The Legend of Shelby the Swamp Man" (9 p.m., His-

tory) expands upon a character already known to fans of "Ax Men." "Legend" follows Shelby and faithful dog Willie as he rebuilds his hurricane-damaged home, finds a new houseboat, wrestles with alligators and dives for bayou cypress.

---My knowledge of Arabian wildlife, or its absence, is pretty much limited to scenes of shifting sands from "Law rence of Arabia." "Wild Arabia" (8 p.m., Animal Planet) aims to set the record straight with profiles of horned vipers, camels, oryxes and other creatures adapted to the peninsula.

---What's a sure sign that your favorite reality/talent contest has grown a little tired? Self-reference and self-promotion. "Face Off" (9 p.m., SyFy) returns for a fifth season with eight players from previous seasons. Tonight's special episode, "Face Off: The Vets Strike Back," includes interviews with old favorites and rehashed clips of their previous successes, failures and meltdowns.

The season begins in earnest next week when contestants old and new compete to create the elaborate looks of partygoers for a costume ball. It's not just any formal affair, but a swank gathering to promote Syfy's new series "Heroes of Cosplay," debuting Aug. 13, directly after "Face Off."

So, not content to re-

cycle talent, Syfy has dragooned them into their marketing department!

---Other returning reality series include "Double Divas" (10 p.m., Lifetime), an unscripted look at Cynthia and Molly's renowned Atlanta-area boutique, LiviRae Lingerie, where a demanding clientele shops for fitted bras and other intimate apparel.

---A third season of "Barter Kings" (10 p.m., A&E) continues to showcase Steve and Antonio, who practice the art of "cashless trading." They begin with a modest item and trade that up until they get the item they desire. Bartering on this level requires a keen sense of the value of their wares and the financial motivations and personal dilemmas of their fellow traders. Everyone in-

volved may be aware of the going price of a particular object, but add a wife, mother or partner who wants it out of the garage, and things can become much more negotiable.

---"The Diplomat" (8 p.m., ESPN), the latest in the "Nine for IX" documentary series, profiles skater and Olympic gold medalist Katarina Witt. Sponsored by the East German government to be the "beautiful face of socialism," Witt would endure surveillance by the Stasi secret police and face challenges when the nation and system she represented collapsed.

---TV-themed DVDs available today include the USA miniseries

"Political Animals,"

with Sigourney Weaver.

OTHER HIGHLIGHTS

---A pair faces elimination on "So You Think You Can Dance" (8 p.m., Fox, TV-14).

---Shark Week on Discovery continues with "Return of Jaws: Sharktweeto" (8 p.m.), "I Escaped Jaws" (9 p.m.) and "Spawn of Jaws" (10 p.m.).

---A surprise party inspires the unexpected on "Pretty Little Liars" (8 p.m., ABC Family, TV-14).

---Brooke Burns hosts the new game show "The Chase" (9 p.m., GSN).

---Danny faces exile on "Twisted" (9 p.m., ABC Family, TV-14).

---Harvey's case falls apart on "Suits" (10 p.m., USA, TV-14).

---Pierce parses a deathbed confession on "Perception" (10 p.m., TNT, TV-14).

---"Hard Knocks" (10 p.m., HBO, TV-MA) breaks camp with the Cincinnati

Bengals.

CULT CHOICE

George Clooney, John Turturro, Tim Blake Nelson, John Goodman and Holly Hunter star in the 2000 historical fantasy "O Brother, Where Art Thou?" (8 p.m., AMC), a musical adaptation of Homer's "Odyssey" that would yield a best-selling roots music soundtrack.

SERIES NOTES

---A surprise party inspires the unexpected on "Pretty Little Liars" (8 p.m., ABC Family, TV-14).

---A road accident claims a teacher on "Rizzoli & Isles" (9 p.m., TNT, TV-14).

LATE NIGHT

---Steve Martin & Edie Brickell and Leven Rambin appear on "Conan" (11 p.m., TBS).

---Jay Leno welcomes President Barack Obama, Matt LeBlanc, Mark Cuban and K.T. Tunstall on "The Tonight Show" (11:35 p.m., NBC).

---Julia Louis-Dreyfus, Nick Offerman and Michael Kiwanuka appear on "Jimmy Kimmel Live" (11:35 p.m., ABC).

---Jane Fonda, Steve Ward, the Head & the Heart and Nile Rodgers visit "Late Night With Jimmy Fallon" (12:35 a.m., NBC).

---Craig Ferguson hosts Diane Kruger and Tony Hale on "The Late Late Show" (12:35 a.m., CBS).

Reach Kevin McDonough at kevin.tvguy@gmail.com.