Today is Katie Couric‘s birthday, and she showed up to work with no idea what was in store for her on “Katie.” Couric didn’t know who her would be on the show — the lineup included Betty White, J.R. Martinez and former “Today” show pal Al Roker — until they appeared on stage. Bravo’s Andy Cohen acted as the show’s co-host, jokingly calling it “Watch What Happens Live to Katie.”

Roker, who arrived on the set hiding his face behind an umbrella, brought along an old clip of Couric singing backup for Stevie Wonder on the “Today” show alongside Matt Lauer. “This was awful. I thought we burned this tape!” Couric said.

CNN has lined up a celebrity team for the fifth annual “CNN Heroes: An All-Star Tribute,” which will air on December 11 at 8pmET. Anderson Cooper will host the special, which will feature the top 10 CNN Heroes of 2011 as voted by the fans. Each will have their story told by a celebrity, including will.i.am, Christy Turlington Burns and Kurt Warner. A live pre-show red carpet will be hosted by  J.R. Martinez of “Dancing with the Stars.”

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There was a lot of singing and dancing on the mornings shows today. Two of them anyway.

“Good Morning America” spent a better part of the 8am hour putting on a “Dancing with the Stars” after-party, flying the top three couples, including winners J.R. Martinez and Karina Smirnoff, on a redeye in time for the show.

HLN’s Nancy Grace, eliminated just one week before the semi-finales, was at last night’s finale. Host Tom Bergeron asked Grace if she would incorporate dancing into her show. Grace joked, “We’re starting it in January, dancing at the jailhouse. You blew it, thanks. It was going to be a big announcement.”

Over on NBC, “Today” countered the dancing with singing from Justin Bieber, in a $1,700 Christmas sweater, alongside Usher. Bieber was on “Today” earlier this month giving his first comments denying the paternity suit brought against him, which has since been dropped.

And here’s an interesting twist of the interconnected Web world we live in. If you want to see images from Bieber’s performance on “Today” you could get their by going to “Good Morning America’s” homepage. Now that it’s run by Yahoo!, the Biebs is featured on the front page.

Detroit Lions reporter Tom Kowalski died suddenly Monday morning, according to his fiancee, Diane Wolan.

The 51-year-old Kowalski covered the Lions for Booth Newspapers and MLive.com. He was found unresponsive at his home and was taken to a local hospital where he was pronounced dead.

Kowalski started for Booth Newspapers in 1997 after covering the Lions for the Oakland Press. His last story for MLive.com was posted online Monday morning.

“My heart broke this morning when I heard the news. I love Tom Kowalski,” said Bill Emkow, executive editor at MLive.com. “He was my friend. I trusted him, and I know he trusted me. He is the first reporter that bought into what we were doing with MLive.com. I needed someone to buy into what we were doing online, and he was the huge star for Booth. I don’t know why he listened to me, but he helped make MLive what you know it as today.”