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.

Gene Kelly's 'Singin' in the Rain' Suit Sells for $100 K-Plus Legend has it that Gene Kelly's suit shrunk during three days of filming "Singin' in the Rain." The suit sold today at auction for more than $100,000 with the water stains still on it and Kelly's name written on the label.

James Cameron Reveals 'Avatar' Sequel Details Director James Cameron revealed today he's planning three sequels to "Avatar." They will be 3-D like the original and filmed in New Zealand. They will also explore new Na'vi cultures as well as an underwater world. Cameron said his unlikely inspiration was "The Godfather" trilogy and a family epic stretching across the years.

Anonymous Tipper Leaves Thousands of Dollars in Tips An anonymous person or persons armed with an AMEX Centurion card, a love for college football and an Instagram account is setting out to "do the Lord's work, one tip at a time," leaving thousands of dollars in tips to unsuspecting servers. On Sept. 8, the @tipsforjesus Instagram account posted the first photo verifying its mission and captured the image of a receipt for Bar Louie in Ann Arbor, Mich., where a $3,000 tip was left for an $87.98 tab.

(tipsforjesus/Instagram)