NBC will serve up a sizzling menu of new and returning summer series - accented by all-new original scripted programming with the series premieres of "The Philanthropist," "Merlin" and "The Listener" – and paced by the new alternative series "I'm a Celebrity...Get Me Out of Here!" and "Great American Road Trip" plus the return of summer's top-rated "America's Got Talent."

In a bold scheduling move, "I'm a Celebrity...Get Me Out of Here!," based on the international hit from Granada America, will debut as a two-hour television event on Monday, June 1 (8-10 p.m. ET) and will be stripped over four weeks in June.

NBC's season finales of "Medium," "Law & Order SVU" and "Law & Order" and the premiere of "The Listener" will provide additional primetime momentum at 10 p.m. for the inaugural week of Conan O'Brien beginning Monday, June 1 (11:35 p.m. – 12:35 a.m. ET).

NBC's eventful summer will also include the action-packed original miniseries "Meteor" and "The Storm." In addition, "Law & Order: Criminal Intent" episodes from USA Network will join the NBC lineup.

"I'm a Celebrity...Get Me Out of Here!" will air Monday through Thursdays for the first three weeks beginning June 1 (8-9 p.m. ET) and during the fourth week of June, the series will be telecast Monday through Wednesday (8-9 p.m. ET) with the finale on Wednesday, June 24 (8-9 p.m. ET).

"Great American Road Trip" will debut on Wednesday, July 1 (8-9 p.m. ET) and will continue for eight weeks.

The popular "America's Got Talent" will kick off its fourth season over two nights on Tuesday, June 23 (9-10 p.m. ET) and Wednesday, June 24 (9-10 p.m. ET). "The Philanthropist" premieres on Wednesday, June 24 (10-11 p.m. ET) while "Merlin" begins on Sunday, June 21 with a two-hour premiere (8-10 p.m. ET). The new drama series will also air from 8-10 p.m. on June 28 before resuming in its normal day and time on Sunday, July 5 (8-9 p.m. ET).

"Medium" will broadcast its season finale Monday, June 1 (10-11 p.m. ET), "Law & Order: Special Victims Unit" will have its season finale on Tuesday, June 2 (10-11 p.m. ET) and "Law & Order" will unveil its season finale on Wednesday, June 3 (10-11 p.m. ET). The new drama "The Listener" will also debut that week on Thursday, June 4 (10-11 p.m. ET).

NBC illuminates the sky this summer with two major miniseries in "The Meteor" on Sunday, June 7 (9-11 p.m. ET) and Sunday, June 14 (9-11 p.m. ET) as well as "The Storm" for broadcast on Sunday, July 19 (9-11 p.m. ET) and Sunday, July 26 (9-11 p.m. ET).

In addition, episodes from the eighth season of "Law & Order: Criminal Intent" (now telecast on USA) will begin on NBC on Monday, June 8 (9-10 p.m. ET)

"Dateline NBC" will begin broadcasts on Mondays (10-11 p.m. ET) beginning June 8.

The annual "Macy's 4th of July Fireworks Spectacular" will take place on July 4 (9-10 p.m. ET).

"I'm a Celebrity...Get Me Out of Here!" is the ultimate Swiss Family Robinson as ten celebrities are dropped into the heart of the jungle to face fun and comedic challenges designed to test their survival skills. America is the puppetmaster, controlling their favorite celebrities by putting them into challenges and tasks to win food, supplies and luxury items. In each episode, friendships will be tested, hilarity will ensue and viewers will decide which celebrities stay or go. The last remaining star will be crowned King or Queen of the Jungle, winning a substantial cash prize for their favorite charity.

The participating celebrities will be announced at a later date. The series is produced by Granada America.

"Great American Road Trip" from BBC Worldwide, is a hilarious and relatable new series where seven families from divergent backgrounds are selected take the journey of a lifetime. Over eight episodes, the families will travel through cities large and small all while competing in a medley of humorous challenges that will ultimately lead one family to victory. These comical, clever challenges are set against iconic American backdrops like the majestic Grand Canyon and the regal Washington Monument. Along the way, our families and our viewers will also discover quirky American landmarks ranging from the World's Largest Chair to a sneaker the size of a car. Although family fun is the centerpiece of the show, the competition is real and one family will be eliminated each week based on their performance in the challenges. Ultimately, only one family will return home with a dream prize that perfectly compliments their extraordinary and memorable summer vacation.

"The Philanthropist" chronicles the heroic adventures of a billionaire playboy turned vigilante philanthropist. James Purefoy stars as Teddy Rist, a successful tycoon whose life is forever changed after rescuing a young boy during a hurricane in the Nigerian town he was visiting. Rist is spontaneous and impulsive and quickly decides to channel his passion, power and money into helping those in need. Rist's actions are not just about helping others – he is purging his soul to help exorcise the inner demons which have been festering ever since his young son died and he lost everything he truly loved. Since the death of his son, the danger and risk to his life is the only way he can feel genuinely alive and he'll do anything in order to achieve his goals.

"Merlin" is a new 13-part drama series that updates the story of the infamous sorcerer of Arthurian legend for a new audience in the mythical city of Camelot, in a time before history began. In this fantastical realm, Merlin is a young man gifted with extraordinary magical powers who arrives in the kingdom and quickly makes enemies, including the heir to Uther's crown, the headstrong Prince Arthur. But guided by Uther's wise physician, Gaius, Merlin is soon using his talents not just to survive but also to unlock Camelot's mystical secrets.

"The Listener" centers on Toby Logan (Craig Olejnik), a 25-year-old paramedic who has a big secret -- he's a telepath. Until now, Toby kept his ability hidden, exploring its possibilities only with his long time mentor and confidant, Dr. Ray Mercer (Colm Feore). As he makes the rounds with his energetic paramedic partner -- "Oz" Bey (Ennis Esmer), "The Listener" follows Toby as he tries to help people in crisis, and in the process, unravel the truth about his past. While his professional life is in check, Toby's personal life could use its own rescue. And with the help of Detective Charlie Marks (Lisa Marcos) and his E.R. doctor/ex-girlfriend Olivia Fawcett (Mylène Dinh-Robic), Toby realizes his gift can help others.

In "Meteor," two massive rocks, tumbling debris older than the solar system itself, collide in space. The course has been altered. The target is Earth. In a remote observatory, Dr. Lehman (Christopher Lloyd), discovers a meteor approximately three times the size of Mount Everest barreling its way towards Earth. His devoted young assistant Imogene O'Neill (Marla Sokoloff) feverishly types in the coordinates only to find the previously identified meteor named Kassandra is headed their way. It's only the beginning of their troubles as showers of smaller meteorites begin to lay waste to major cities around the globe.

In "The Storm," also from RHI Entertainment, billionaire Robert Terrell (Treat Williams) has fulfilled a lifelong obsession and made history with "weather creation" technology though his Atmospheric Research Institute. But during a test run, a blast of energy is sent into the ionosphere with unexpected results. The experiments hurtle the planet towards destruction-hurricanes change course, winds go instantly from hot to cold, torrential rains bring regions to a standstill, and buildings crumble into ruins under explosive lightening storms. It's only the beginning.

A summary of NBC's new summer lineup follows (new series capitalized; all times ET):

Monday, June 1
"I'M A CELEBRITY...GET ME OUT OF HERE!" -- premiere (8-9 p.m.)
"Medium" season finale (10-11 p.m.)

Tuesday, June 2
"Law & Order: Special Victims Unit" -- season finale (10-11 p.m.)

Wednesday, June 3
"Law & Order" -- season finale (10-11 p.m.)

Thursday, June 4
"THE LISTENER" -- premiere (10-11 p.m.)

Sunday, June 7 And June 14
"METEOR" -- miniseries (9-11 p.m.)

Monday, June 8
"Law & Order: Criminal Intent" (NBC season premiere; 9-10 p.m.)
"Dateline NBC" (10-11 p.m.)

Sunday, June 21
"MERLIN" (premiere 8-10 p.m.; June 28 airs 8-10 p.m.; July 5 resumes regular time 8-9 p.m.)

Tuesday, June 23 And Wednesday, June 24
"AMERICA'S GOT TALENT" (9-10 p.m. both nights)

Wednesday, June 24
"THE PHILANTHROPIST" – premieres (10-11 p.m.)

Wednesday, July 1
"GREAT AMERICAN ROAD TRIP" -- premieres (8-9 p.m.)

Saturday, July 4

Sunday, July 19 And Sunday, July 26
"THE STORM" – miniseries (9-11 p.m.)