'Nightline' Daily Line, March 19: Oprah Cancels Rosie's Show, Secret Service Names

 And a happy Monday to us all.

10:31 p.m. ET: One hour to air…tonight we've got the indefatigable JuJu Chang in the anchor chair, talking female sexuality…and letting Ashley Judd get unplugged. [ EDIT...these two pieces are unrelated]

10:08 p.m. ET: 911 calls from the Treyvon Martin Neighborhood Watch killing here. F0llow @MattGutmanABC for up-to-the-minute updates on this case.

8:56 p.m. ET: A Nightline newsroom survey- What would your Secret Service name be?

Anchor JuJu Chang: Sweet Kimchee

Director Jeff Kay: Grumpy

Senior Producer Pete Austin: Daddy

Writer Jackie Jesko: Optimus Prime

Associate Producer Dan Lieberman: Top Dog

8:22 p.m. ET: Interesting scoop in  GQ Magazine today- the Secret Service code names of GOP frontrunners Rick Santorum and Mitt Romney:

" GQ can reveal the names chosen by the top two GOPers: according to multiple campaign sources, Mitt Romney elected to call himself "Javelin." And Rick Santorum chose "Petrus." "Petrus," is a biblical allusion, Latin for "Rock"-and "Peter"-as in St. Peter, the first pope. Perhaps "Javelin" is a reference to the '60s muscle car made by American Motors Corporation, the company once run by George Romney."

For the record: Obama's SS name is 'Renegade'.

7:52 p.m. ET: No mo' Tebowing? Peyton Manning will be the new quarterback of the Denver Broncos, with the final contract currently in the works, according to  ESPN.

5:45 p.m. ET: Oprah cancels Rosie's new talk show on her OWN network after just five months on the air. Rosie said in a statement "I wish the show was able to attract more viewers - but it did not. So I am headed back to my home in New York - with gratitude. On we go!"

"Nightline" was there for the first behind-the-scenes look at "The Rosie Show," when it debuted on Oct. 10, 2011:

And it seems Oprah had her hesitations with bringing Rosie on before the show even started. In an interview with "Nightline" anchor Cynthia McFadden, Rosie said she asked Oprah if she want to "see if I was insane."