PBS NewsHour (7pm, UNC-TV) - In this special report, Robert MacNeil and Jim Lehrer look back at the Watergate scandal that began in the summer of 1973, transforming American politics and journalism and ultimately ending a presidency. MacNeil and Lehrer led PBS coverage of the Watergate hearings, co-anchoring all 250 hours of the proceedings. They share their memories and talk about how the experience forged their friendship and their journalistic partnership.
How Nature Works (8pm, National Geographic Channel) - A documentary looking at the interconnectivity of the millions of plant and animal species on Earth.
Nikita (8pm, CW) - Amanda puts her final plan into effect as the third season ends. Her diabolical plot places Nikita (Maggie Q, left) in a life-threatening situation and forces her to choose between saving Michael or herself.
Shark Tank (8pm, ABC) - The fourth season ends with two new back-to-back episodes. In the first, sharks hear about a jewelry line created by women with military experience and we get an update on the Scrub Daddy investment. At 9, two business school grads have an idea for a translation app, and an 11-year-old pitches his all-natural dog treats.
Fatal Justice (8pm, Lifetime) - A woman seeks justice for her family after her niece is seriously injured during a robbery. When the police fail to help, she takes matters into her own hands and learns that the men involved in the crime may also be responsible for her brother's murder 10 years earlier..
Real Time With Bill Maher (10pm, HBO) - Zach Galifianakis is Maher's mid-show interview guest tonight. Other guests include Richard Haass, president of the Council on Foreign Relations, S.E. Cupp, documentary filmmaker Michael Moore and journalist Andrew Ross Sorkin.
Merlin (10pm, Syfy) - An old flame reenters Mondred's life and tests his loyalty to Arthur.
Who Do You Think You Are (8pm, NBC) - Actor Blair Underwood traces his lineage in a genealogical journey that includes a DNA test, a trip to Africa, and articles that reveal the hardships and unforeseen triumphs of his ancestors. Meredith College history professor Dr. Dan Fountain (right) was consulted and worked with Underwood for the episode. Read
scrutinize some of the crazy happenings at the Buy More.
Shark Tank (8pm, ABC) - Redneck millionaire Jeff Foxworthy (left) takes a seat with the Sharks tonight. Also, Vincent Pastore, who played Big P-, uh, make that Salvatore Bonpensiero on 'The Sopranos,' pitches an idea.
Camelot (10pm, Starz) - A new historical drama chronicling the storied Arthurian legend. In this first episode, King Uther dies, leaving young commoner Arthur (Jamie Campbell Bower) as heir to the throne of England, where he is championed by the wizard Merlin (Joseph Fiennes) but destined to tangle with his evil half sister, the sorceress Morgan (Eva Green). There's a second episode at 11pm in which Arthur meets Guinevere (Tamsin Egerton), the woman of his dreams. Meanwhile, Morgan and King Lot conspire to attack Camelot and take the throne. Read our review
Your OWN Show: Oprah's Search for the Next TV Star (9pm, OWN) - Ten hopefuls vie for a chance at their own talk show in this new reality competition show. In tonight's first episode, the finalists (selected by online voting) are introduced to Oprah and must produce talk show segments under the watchful eye of Dr. Phil. Carson Kressley and Nancy O'Dell are the hosts, and Mark Burnett ("Survivor" "Apprentice") is the executive producer. Someone will be eliminated each week till Oprah has a new employee.
Whale Wars (9pm, Animal Planet) - It
Merlin (8pm, NBC) - Merlin is saved from a magical winged creature by young Lancelot (Santiago Cabrera), and then tries to help Lancelot become a knight in King Arthur's court.
Merlin (8pm, NBC) - NBC didn't score with their futuristic retelling of David & Goliath, but maybe there's magic in "Merlin," a fantasy show about the pre-Camelot years of Arthur. Stars Anthony Head (left), who played Giles on "Buffy the Vampire Slayer." Back-to-back episodes at 8 and 9.