Instant Index: Oprah's Back Injury; Tina Fey and the Muppets

Diane Sawyer with the top stories that have people buzzing this week.
1:42 | 01/31/13

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Transcript for Instant Index: Oprah's Back Injury; Tina Fey and the Muppets
Our "instant index" tonight begins with two surprises from the animal kingdom. 110 days until summer, and word today, we're going to need a bigger boat. Yep, that's a great white, a real life jaws, you see there, trolling the waters off long island here in new york today. It is 16 feet long, 3,500 pounds. Researchers have been searching the movement of this very shark with gps and she swam 1,000 miles, from jacksonville, florida, all the way to new york. And she's still swimming out there tonight. And a letter carrier reminded us today it is not always postman versus dog. Here is the video that lande our inbox. A mailman in cape cod, massachusetts, greeted at the white picket fence by a golden retriever, not with a snarl, but an enthusiastic offer of help. Listen. Go give it to them! That's all I got! Have a nice day. Go give it to them! Best part of my day. Nice part of our day, too. And the one and only oprah today proved maybe you can be too popular on your birthday. LOOK, THERE SHE IS ON HER 59th, Surrounded by flowers. Among them, a giant arrangement from actor and director tyler perry. So big, oprah says she sprained her back lifting it. She tweeted, quote, in bed with an ice pack most of the day, end quote. Perry responded, saying, next YEAR, FOR OPRAH'S 60th, SHE'S Going to get a single rose.And if there's something out there you see or hear or love for our "instant index," tweet it to me, @dianesawyer. And coming up, something

This transcript has been automatically generated and may not be 100% accurate.

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