I SPY NY: Kristen Bell, Justin Gaston and More

I spy in NY…

Kristen Bell heading to a taping of the Late Show with David Letterman Monday (top photo), Justin Gaston posing with castmates from new show If I Can Dream Tuesday in Times Square (middle photo), O’Neal McKnight performing at CV Friday night (bottom photo), Tom Brokaw screening new documentary American Character Along Highway 50 at the Crosby Street Hotel Thursday, Mario hanging out at Quo Sunday, and Michael Imperioli performing at Greenhouse with his band La Dolce Vita last Monday.

I SPY NY: James McAvoy, Lil Jon and More

I spy in NY…

James McAvoy looking delicious at The Last Station premiere at the Paris Theatre Sunday night (top photo), Lil Jon partying at Quo Saturday night (middle photo), a teeny Jennifer Connelly in head-to-toe Balenciaga on her way to tape the Late Show with David Letterman Monday (bottom photo), Q-Tip spinning at Greenhouse Tuesday night, and Questlove spinning at the opening of Amnesia Saturday night.

I SPY NY: Michael Cera, Jenna Elfman and More

I spy in NY…

Michael Cera attending a screening for new flick Youth in Revolt at the Union Square Regal Cinemas Tuesday (top photo), a very pregnant Jenna Elfman leaving The Late Show with David Letterman Monday (middle photo), Sarah Jessica Parker getting her hair did at John Freida Monday (bottom photo), Josh Madden DJing at Eldridge Wednesday night, and Ashlee Simpson shopping with son Bronx Mowgli Wentz Monday.

Quote of the Night

“If there’s one thing people know it’s that I’m in Roger Federer‘s head. Definitely. That’s probably as consistent as gravity.”

–Andy Roddick tells David Letterman

The Killers Fairytale Performance

In case you missed The Killers‘ fantastic performance of “A Dustland Fairytale” on the Late Show with David Letterman last night (the Las Vegas foursome brought out an entire orchestra), Poison Ivy has you covered!

Let us know what you think in the comments below.

Dolly Does Letterman

Dolly Parton got all dolled up for a performance of “Backwoods Barbie” on the Late Show with David Letterman Wednesday.

The jam, off her latest record, will also be featured in Parton’s new Broadway show, 9 to 5!

Check out the stellar performance above.

Beyonce Rocks Letterman

It’s a great day to be a New Yorker!!!!

Beyonce hit the Late Show with David Letterman Wednesday night to perform her latest hit “Halo,” for hundreds of fans.

Check it out above!!!

Seth Rogen Wants to Fit the Part

Now that he’s in every movie ever, Seth Rogen wants to fit the part!!

It’s a shame he can’t fit into his own tux though!

He’s lost so much weight, he’s practically swimming in those slacks!!

Rogen hit the Late Show with David Letterman Monday to promote his latest(s): Monsters vs. Aliens, Observe and Report and Funny People.

Don’t go crazy with the weight, Seth. We like the old you!

Christina Applegate Does Letterman

The always lovely Christina Applegate poses for a photo on the way out of Late Show with David Letterman Monday.

Hot or cold, rain or shine, the girl’s always smiling!

Even on New York’s coldest of nights!

U2 Kick Off Week of Letterman Performances

Bono snaps a photo of fans waiting outside the Late Show with David Letterman Monday, where U2 played their first of five performances this week.

On Friday, the band played atop a roof to the tune of 5,000 screaming fans.

The stunts are aimed to promote U2’s latest album, No Line on the Horizon, out today.

What will the band do next??

Perform inside a spaceship???