World News Behind the Scenes: 9/18/2012

From the cute and cuddly to the unconventional and awe-inspiring, h ere's a look at the photos, videos and characters that have our newsroom talking today.

3:43 p.m. ET Jennifer Aniston Reveals Faux Baby Bump in Ad In an ad for Smartwater designed to go viral, "stolen" footage from Jennifer Aniston's security cameras reveals that the 43-year-old actress is pregnant with triplets and that she has a unique workout regimen. There's even a cameo from Jimmy Kimmel, he plays Aniston's secret son.

3:04 p.m. ET NFL Films President Steve Sabol Dies at 69 Steve Sabol, the president of NFL Films, died today from a brain tumor at the age of 69 . Sabol used his incomparable creativity to turn football games into films respected for their cinematography and story structure.

Image Credit: Daniel Hulshizer/AP Photo

2:15 p.m. ET Where Does the McRib Go? The McRib is leaving its undisclosed location and making a comeback in December, according to a memo obtained by Advertising Age. The cult-favorite will be available starting the second half of the month, just in time for Christmas.

Image Credit: McDonald''s

11:44 a.m. ET Mother-to-Daughter Uterus Transplant Doctors at the University of Goteborg in Sweden completed the world's first mother-to-daughter uterus transplant over the weekend. Two women, who began in-vitro fertilization before the transplant, received wombs from their mothers and doctors say they will not consider the surgery a success unless the women are able to become pregnant.

Image Credit: Adam Ihse/AP Photo

11:23 a.m. ET Stewart vs. O'Reilly Jon Stewart and Bill O'Reilly will go head-to-head in a debate on Oct. 6 titled "Rumble in the Air Conditioned Auditorium." The event will take place in Washington D.C. and will be streamed at www.therumble2012.com for $4.95 per view. Organizers say half the proceeds will go to charity.

Image Credit: therumble2012.com

11:00 a.m. ET Lion + Liger = Liliger Kiara is one cool cat. Born at Siberian Zoo in August, Kiara is thought to be the first Liliger in existence. The cub's father is a lion, while her mother is liger (lion crossed with a tiger).