From the unconventional and awe-inspiring to the hilarious and heartwarming, here's a look at some of the most interesting photos, videos and stories that have our newsroom talking today. What's capturing your attention, filling your inbox and cluttering your Facebook/Twitter feed? Tweet us the stories you're talking about using #InstantIndex or email us at ABC.WorldNews@abc.com and they could appear on World News.

2-Year-Old's Adorable Birthday Message for Mom A stay-at-home dad in New Jersey just might be in the running for "husband of the year." Faced with his wife's birthday and the need for a "wow" present, he enlisted the help of his daughter Claire, 2, who definitely is not camera shy. "Hi Mommy!" she said in a video message. "I love you so much. There's a lot of reasons why. You are amazing, you're the best cook, you work so hard and I miss you when you're gone. Happy birthday!" Dad loaded the video on Mom's iPad and Mom said it was the best birthday present she'd ever gotten.

Paul McCartney Gives Surprise Times Square Concert Sir Paul McCartney gave a surprise concert in Times Square today. The 71-year-old gave fans just 30 minutes' notice but fans descended, all armed with their smartphones to capture the moment.

(@itstonybennett/Twitter)

Indy 500 Winner Dario Franchitti Walks After Crash After a horrific crash at the Houston Grand Prix this weekend, Indy 500 winner Dario Franchitti walked out of the hospital today. He had a cast on his leg, a brace on his chest and his two dogs, Shug and Buttermilk, by his side every step of the way. Just four days ago, the race car driver crashed into a fence, fracturing his spine and ankle. His teammates said Franchitti was texting and calling from his phone again, a sure sign he's on the mend.