I SPY NY: Rihanna, Hugh Jackman and More

I spy in NY…

Rihanna performing in a blizzard with Jay-Z for a special Rockfeller Plaza New Year’s Eve taping with Carson Daly Saturday (top photo), Hugh Jackman having a snowball fight with his kids Sunday (middle photo), Mark Ronson spinning at Webster Hall Friday night (bottom photo), Ed Westwick tearing it up at Armani Exchange Thursday, David Archuleta rocking Christmas songs on the Today Show Monday, Gym Class Heroes‘ Travis McCoy performing his first solo show with Matisyahu at Music Hall of Williamsburg during the 2009 Festival of Light Saturday, and Janet Jackson hanging out at Alicia Keys‘ private party Thursday.

[Mark Ronson photo by Marjana Jaidi]

I SPY NY: Rachel Bilson, Honor Society and More

I spy in NY…

Rachel Bilson hanging at the Target To-Go kickoff Friday (top photo), Honor Society rocking the New York Stock Exchange tree lighting ceremony Thursday (middle photo), John Mayer and Taylor Swift performing “Half of my Heart” live for the first time at the Z100 Jingle Ball at Madison Square Garden Friday (bottom photo), Dashboard Confessional and New Found Glory performing an acoustic set at Highline Ballroom Friday, John Legend playing piano at Tom Colicchio‘s Top Chef finale dinner sponsored by American Express at Craftsteak Wednesday, Mark Ingram scooping up the Heisman Award at Nokia Theatre Saturday night, and Matisyahu tearing it up at a Hanukkah concert at Webster Hall Saturday night.

Matisyahu Jams with Kenneth Cole for Fashion Week

“You’re about to meet my favorite Orthodox Jewish reggae rapper,” said Kenneth Cole.

Cole was hosting an event at his Rockefeller Plaza store in NYC Thursday night – along with special guest Matisyahu – as part of Fashion’s Night Out, a city-wide initiative aimed at boosting retail sales and connecting designers with their shoppers.

“You owe it to your country to shop tonight,” Cole will later remind the audience.

Matisyahu was too doing his part – treating shoppers to a powerful 45-minute set, including songs like “Jerusalem,” “I Will Be Light,” and new hit “One Day.”

Hundreds of fans – both religious and non – swayed to the music and sung along, while others were a little more shocked at the rare opportunity of an intimate performance.

“I love your peyes!” shouted a boy in the front row.

Check out a clip of the soulful performance, below.