Alex Trebek with contestants Ken Jennings and Brad Rutter and a computer named Watson
Jeopardy! all-time winner Brad Rutter and the supercomputer dubbed "Watson" are neck-and-neck after their challenge began Monday.
Rutter and former contestant Ken Jennings — who holds the game show's longest winning streak— are facing off against the IBM machine that has been in development for two years. Named for IBM founder Thomas J. Watson, the machine is powered by 10 racks of computer servers running the Linux operating system.
Portia de Rossi and Ellen DeGeneres
A woman has been charged with trespassing Ellen and Portia DeGeneres' home, Us Weekly reports.
Karen Grace Sjoden, 49, was charged with misdemeanor trespassing Monday and pleaded not guilty.
Dwayne "The Rock" Johnson is returning to WWE's WrestleMania , he announced on Monday Night Raw.
"Finally, The Rock has come back to WrestleMania. The most electrifying man of all of entertainment is hosting the most electrifying event of all of entertainment!" he shouted.
See photos of The Rock
Johnson, who left the ring seven years ago to focus on acting, will host WrestleMania XXVII on April 3.
Irina Shayk, a 25-year-old Russian model, has landed the coveted cover of the Sports Illustrated swimsuit issue.
The cover was revealed during Monday's Late Show with David Letterman when a sheet was removed to unveil a billboard version of the cover in Times Square.
Joanne Siegel, the widow of Superman co-creator Jerry Siegel who served as the model for Lois Lane, has died, according to The Hollywood Reporter. She was 93.
Joanne (nee Carter) met Jerry as a teen in Cleveland in the 1930s after she placed an ad in a local paper offering to model. She soon became the inspiration for Superman's love interest, Lois Lane.
Lisa Valastro and Buddy Valastro
The Cake Boss family no longer has a bun in the oven: Buddy Valastro's wife, Lisa, has given birth to a baby boy.
Carlo Salvatore Valastro was born Monday, weighing in at 7 pounds, 3 ounces.
Lady Gaga anad Jay Leno
Lady Gaga says that Madonna supports her new single "Born This Way."
The song, which was released last week, has been criticized by fans and critics for its similarity to Madonna's '80s hit "Express Yourself, but Gaga said on Monday's Tonight Show that the music icon has given her blessing.